 | Cactus. | (2) |
| California black oak. | (1) |
| Calves Economic aspects New Mexico. | (1) |
| Calves United States Statistics. | (1) |
| Camellia Breeding. | (1) |
| Camellia Genetics. | (1) |
| Camping Minnesota. | (1) |
| Camp sites, facilities, etc. | (1) |
| Camp sites, facilities, etc. Northeastern States. | (1) |
| Camptotheca acuminata. | (1) |
| Canned beans. | (1) |
| Canned foods industry Southern States. | (4) |
| Canned goods Industry and trade Greece. | (1) |
| Canned tomatoes. | (1) |
| Canning and preserving Industry and trade Australia. | (1) |
| Canning and preserving Industry and trade Greece. | (1) |
| Capital investments. | (1) |
| Capital Oklahoma. | (1) |
| Carex Rocky Mountains Region Handbooks, manuals, etc. | (1) |
| Carnations Handling. | (1) |
| Carnations Transportation. | (1) |
| Carotenes. | (1) |
| Carp. | (1) |
| Carpet beetles. | (1) |
| Carrots Prices United States. | (1) |
| Carrots United States. | (1) |
| Castration. | (1) |
| Catfishes. | (1) |
| Catfishes Southern States Marketing. | (1) |
| Catostomidae. | (1) |
| Cattle brands. | (1) |
| Cattle Economic aspects Southwestern States. | (1) |
| Cattle Feeding and feeds. | (5) |
| Cattle Feeding and feeds Economic aspects Missouri. | (1) |
| Cattle Feeding and feeds Economic aspects New Mexico. | (1) |
| Cattle New Mexico Feeding and feeds. | (1) |
| Cattle Parasites West (U.S.) | (1) |
| Cattle Physiology. | (1) |
| Cattle Sierra Leone. | (1) |
| Cattle Southern States Transportation. | (1) |
| Cattle trade. | (1) |
| Cattle trade Arizona. | (2) |
| Cattle trade Australia. | (1) |
| Cattle trade Central America. | (2) |
| Cattle trade Northwestern States. | (1) |
| Cattle trade Southern States. | (2) |
| Cattle trade United States. | (4) |
| Cattle trade United States Marketing. | (1) |
| Cattle trade United States Statistics. | (1) |
| Cattle trade West (U.S.) | (1) |
| Cattle United States. | (1) |
| Cattle United States Statistics. | (1) |
| Cattle United States Transportation. | (1) |
| Cauliflower. | (1) |
| Cauliflower Varieties. | (1) |
| Celery Grading. | (1) |
| Celery Packing. | (1) |
| Celery Precooling. | (1) |
| Ceratocystis fagacearum Control Pennsylvania. | (1) |
| Ceratocystis fagacearum Control West Virginia. | (1) |
| Cercopidae. | (1) |
| Cereal rusts. | (1) |
| Cereals, Prepared. | (1) |
| Chain stores Middle West. | (1) |
| Chamaecyparis nootkatensis Bibliography. | (1) |
| Cheese factories. | (1) |
| Cheese Washington (D.C.) Marketing. | (1) |
| Chelonus. | (1) |
| Chemurgy. | (1) |
| Chicken industry United States. | (2) |
| Chicken industry West Virginia. | (1) |
| Chiggers (Mites) Control. | (1) |
| Children Metabolism. | (1) |
| Children Nutrition. | (2) |
| Chlordan Economic aspects United States. | (1) |
| Christmas tree growing Montana. | (1) |
| Christmas trees. | (1) |
| Chromatographic analysis. | (1) |
| Chrysanthemums. | (1) |
| Chrysanthemums Handling. | (1) |
| Church and social problem Bibliography. | (1) |
| Cider. | (1) |
| Cirsium arvense. | (1) |
| Cities and towns Georgia. | (1) |
| Cities and towns Growth Bibliography. | (1) |
| Cities and towns Michigan Growth. | (1) |
| Cities and towns Middle West Growth. | (1) |
| Cities and towns Planning. | (2) |
| Cities and towns South Dakota. | (1) |
| Citrus fruit industry Brazil. | (1) |
| Citrus fruit industry United States. | (1) |
| Citrus fruit industry United States Statistics. | (1) |
| Citrus fruits California Transportation. | (2) |
| Citrus fruits Diseases and pests. | (1) |
| Citrus fruits Diseases and pests Southwest, New. | (1) |
| Citrus fruits Florida. | (1) |
| Citrus fruits Florida Cooperative marketing. | (1) |
| Citrus fruits Grading. | (1) |
| Citrus fruits Storage Diseases and injuries. | (1) |
| Citrus oils. | (1) |
| City planning. | (1) |
| City planning New Mexico. | (1) |
| Cleaning. | (2) |
| Cleaning compounds. | (1) |
| Clearcutting. | (1) |
| Clearcutting Cascade Range. | (1) |
| Clearcutting Oregon. | (1) |
| Clearcutting West Virginia. | (1) |
| Clearing of land Pennsylvania. | (1) |
| Climbing plants Northeastern States. | (1) |
| Clothes moths. | (1) |
| Clothing and dress. | (2) |
| Clothing and dress Statistics. | (1) |
| Clothing trade United States. | (1) |
| Clouds Bibliography. | (1) |
| Clouds Photographs from space Bibliography. | (1) |
| Coastal zone management Louisiana. | (1) |
| Cocoa. | (1) |
| Cocoa trade. | (1) |
| Coffee trade. | (1) |
| Coffee trade Developing countries. | (1) |
| Cold storage. | (1) |
| Cold-storage lockers. | (2) |
| Color. | (1) |
| Commerce Dictionaries. | (1) |
| Commerce Terminology. | (1) |
| Commercial policy. | (1) |
| Communes (China) | (1) |
| Community health services Louisiana. | (1) |
| Concrete blocks. | (1) |
| Concrete dams Colorado. | (1) |
| Concrete walls. | (2) |
| Conifers. | (2) |
| Conifers. cn | (1) |
| Conifers Diseases and pests. | (1) |
| Conifers Diseases and pests North America Bibliography. | (1) |
| Conifers Packing. | (1) |
| Conifers Seedlings. | (1) |
| Conifers Seeds. | (2) |
| Conifers Seeds Bibliography. | (1) |
| Conservation of natural resources United States. | (1) |
| Consumer education. | (7) |
| Consumer education Study and teaching. | (1) |
| Consumers. | (1) |
| Consumers Alabama Birmingham. | (1) |
| Consumers Attitudes. | (1) |
| Consumers' preferences. | (6) |
| Consumer's preferences United States. | (1) |
| Consumers' preferences United States. | (4) |
| Consumers' preferences Wyoming. | (1) |
| Consumers South Carolina Greenville. | (1) |
| Consumers Southern States. | (2) |
| Consumption (Economics) | (1) |
| Containers Standards. | (1) |
| Contract labor United States. | (1) |
| Contracts, Agricultural Illinois. | (1) |
| Contracts, Agricultural United States. | (3) |
| Cookery. | (1) |
| Cookery (Apples) | (1) |
| Cookery (Beef) | (2) |
| Cookery (Cereals) | (1) |
| Cookery (Fruit) | (1) |
| Cookery (Lamb and mutton) | (1) |
| Cookery (Macaroni) | (1) |
| Cookery (Milk) | (1) |
| Cookery (Nuts) | (1) |
| Cookery (Pork) | (1) |
| Cookery (Veal) | (2) |
| Cooperative cold storage lockers. | (1) |
| Cooperative cold-storage lockers. | (1) |
| Cooperative marketing of farm produce United States. | (1) |
| Cooperative societies Appalachian Region. | (1) |
| Corn Breeding. | (1) |
| Corn Diseases and pests. | (2) |
| Corn Diseases and pests Indiana. | (1) |
| Corn Drying. | (1) |
| Corn Economic aspects Europe. | (1) |
| Corn Field experiments. | (1) |
| Corn Genetics. | (1) |
| Corn Harvesting. | (1) |
| Corn Illinois Fertilizers. | (1) |
| Corn Indiana. | (1) |
| Corn meal. | (1) |
| Corn Middle West. | (2) |
| Corn New Mexico. | (1) |
| Corn Storage Diseases and injuries. | (1) |
| Corn Storage Diseases and injuries Southern States . | (1) |
| Corn United States. | (1) |
| Corporations Taxation United States. | (1) |
| Cost and standard of living Alabama. | (1) |
| Cost and standard of living Northeastern States. | (1) |
| Cost and standard of living Ohio Case studies. | (1) |
| Cotton. | (4) |
| Cotton Brazil. | (1) |
| Cotton Breeding. | (1) |
| Cotton California San Joaquin Valley Testing. | (1) |
| Cotton Cleaning. | (3) |
| Cotton Disease and pest resistance New Mexico. | (1) |
| Cotton Diseases and pests. | (2) |
| Cotton fabrics. | (1) |
| Cotton gins and ginning. | (10) |
| Cotton gins and ginning Mississippi. | (1) |
| Cotton gins and ginning New Mexico Costs. | (1) |
| Cotton gins and ginning New Mexico Las Cruces. | (1) |
| Cotton gins and ginning Oklahoma Costs. | (1) |
| Cotton gins and ginning South Carolina. | (1) |
| Cotton gins and ginning Texas Costs. | (1) |
| Cotton Grading. | (4) |
| Cotton growing. | (2) |
| Cotton growing Greece. | (1) |
| Cotton growing New Mexico. | (1) |
| Cotton growing Southern States. | (1) |
| Cotton growing United States. | (1) |
| Cotton handling Costs. | (1) |
| Cotton Iran. | (1) |
| Cotton manufacture Costs. | (1) |
| Cotton manufacture Europe. | (1) |
| Cotton manufacture Mathematical models. | (1) |
| Cotton manufacture Texas. | (1) |
| Cotton manufacture United States. | (1) |
| Cotton Moisture. | (2) |
| Cotton Pakistan. | (1) |
| Cotton picking. | (1) |
| Cotton Prices New Mexico. | (1) |
| Cotton Quality. | (1) |
| Cottonseed. | (2) |
| Cottonseed Grading. | (1) |
| Cottonseed meal as feed. | (1) |
| Cottonseed oil Prices. | (1) |
| Cottonseed oil Storage. | (1) |
| Cottonseed United States Statistics. | (1) |
| Cotton spinning. | (4) |
| Cotton Statistics. | (1) |
| Cotton Storage Costs. | (2) |
| Cotton Testing. | (3) |
| Cotton textile industry Europe. | (1) |
| Cotton trade. | (1) |
| Cotton trade Brazil. | (1) |
| Cotton trade Colombia. | (1) |
| Cotton trade Greece. | (1) |
| Cotton trade New Mexico. | (1) |
| Cotton trade North Carolina. | (1) |
| Cotton trade South Carolina. | (1) |
| Cotton trade Soviet Union. | (1) |
| Cotton trade Tanzania. | (1) |
| Cotton trade United States. | (4) |
| Cotton trade United States Statistics. | (1) |
| Cotton Turkey. | (1) |
| Cotton Uganda. | (1) |
| Cotton United States. | (1) |
| Cotton United States Handling Costs. | (1) |
| Cotton United States Statistics. | (2) |
| Cotton United States Transportation Statistics. | (1) |
| Cotton-waste. | (1) |
| Cotton-waste Prices United States. | (1) |
| Coumestrol. | (1) |
| County school systems Arkansas. | (1) |
| Cover crops. | (2) |
| Cowpea. | (1) |
| Cows. | (1) |
| Cow testing associations. | (1) |
| Crabapple. | (1) |
| Cronartium comandrae Rocky Mountains Region. | (1) |
| Cropland conversion program. | (1) |
| Crops and climates North Dakota Statistics. | (1) |
| Crops and climate Turkey. | (1) |
| Crops and climate United States. | (1) |
| Crops North Dakota Statistics. | (1) |
| Crop yields Developing countries Statistics. | (1) |
| Crop yields United States Linear programming. | (1) |
| Crop yields United States Statistics. | (1) |
| Culicoides. | (1) |
| Cutover lands Alaska. | (1) |
| Cyperaceae Wyoming Identification. | (1) |