 | Bacillus (Bacteria) | (1) |
| Bacillus thuringiensis. | (1) |
| Backpacking. | (1) |
| Bacon. | (1) |
| Bacterial diseases of plants. | (1) |
| Bacterial soft rot of asparagus. | (1) |
| Bacteria, Nitrifying. | (1) |
| Bakers and bakeries United States. | (2) |
| Baking. | (1) |
| Balance of payments Mexico. | (1) |
| Balance of payments Soviet Union Congresses. | (1) |
| Balance of payments United States. | (2) |
| Bamboo. | (1) |
| Banana trade Developing countries. | (1) |
| Bark-beetles Biological control United States. | (1) |
| Bark beetles Minnesota. | (1) |
| Bark Tables. | (1) |
| Bark Utilization. | (1) |
| Barley. | (1) |
| Barley Breeding. | (1) |
| Basements. | (1) |
| Basidiomycetes. | (1) |
| Basidiomycetes United States. | (1) |
| Beans Diseases and pests | (1) |
| Bee culture. | (1) |
| Bee culture Economic aspects United States. | (1) |
| Bee culture Queen rearing. | (1) |
| Bee culture United States. | (1) |
| Beef. | (2) |
| Beef cattle. | (6) |
| Beef cattle Breeding. | (1) |
| Beef cattle California Feeding and feeds. | (1) |
| Beef cattle Colorado Feeding and feeds. | (1) |
| Beef cattle Economic aspects Colorado. | (1) |
| Beef cattle Economic aspects United States. | (1) |
| Beef cattle Feeding and feeds. | (4) |
| Beef cattle Middle West Feeding and feeds. | (1) |
| Beef cattle New Mexico. | (1) |
| Beef cattle Prices. | (1) |
| Beef cattle Prices United States. | (1) |
| Beef cattle Southern States. | (1) |
| Beef cattle Southern States Statistics. | (1) |
| Beef cattle United States. | (1) |
| Beef industry. | (1) |
| Beef industry Southern States. | (1) |
| Beef packers. | (1) |
| Beef Prices United States. | (2) |
| Beef Transportation. | (1) |
| Bees United States. | (1) |
| Beeswax United States. | (1) |
| Beeswax United States Statistics. | (1) |
| Beet leaf-hopper West (U.S.) | (1) |
| Beetles | (1) |
| Beetles. | (1) |
| Beetles Maine Aroostook County. | (1) |
| Beetles Parasites United States. | (1) |
| Bell pepper Diseases and pests. | (1) |
| Bell pepper Storage Diseases and injuries. | (1) |
| Berries Diseases and pests. | (1) |
| Biochemistry. | (2) |
| Bioenergetics. | (1) |
| Biphenyl. | (3) |
| Birch Growth. | (1) |
| Birch Seeds. | (1) |
| Birch Selection. | (1) |
| Birds Food. | (1) |
| Birds Habitat. | (1) |
| Birds New Mexico. | (2) |
| Bird-song. | (1) |
| Birds Puerto Rico. | (1) |
| Birds Virgin Islands. cm | (1) |
| Blackberries Diseases and pests. | (1) |
| Blister rust. | (1) |
| Blueberries. | (1) |
| Blueberries Harvesting. | (1) |
| Blueberries Marketing. | (1) |
| Blueberries North Carolina. | (1) |
| Blueberries Packing. | (1) |
| Blue grama grass. | (1) |
| Boating industry New England. | (1) |
| Boll weevil Abstracts. | (1) |
| Boll weevil Bibliography. | (1) |
| Boll weevil Control. | (1) |
| Bombyliidae South America. | (1) |
| Botanical chemistry Congresses. | (1) |
| Botany Africa. | (2) |
| Botany Arizona Gila County Ecology. | (1) |
| Botany California. | (1) |
| Botany Ecology. | (1) |
| Botany, Economic Appalachian Region. | (1) |
| Botany, Economic Congresses. | (1) |
| Botany Mexico Sonora. | (1) |
| Botany Morphology. | (1) |
| Botany New York (State) Cayuga Lake. | (1) |
| Botany Nomenclature. | (2) |
| Botany Northwestern States Nomenclature. | (1) |
| Botany Oregon Ecology. | (2) |
| Botany Ozark Mountains. | (1) |
| Botany Rocky Mountains Region Classification. | (1) |
| Botany Rocky Mountains Region Handbooks, manuals, etc. | (1) |
| Botany South Dakota Pictorial works. | (1) |
| Botany Technique. | (1) |
| Botany Vermont. | (1) |
| Botany Washington (State) Ecology. | (3) |
| Botany West (U.S.) | (3) |
| Botany Wyoming. | (1) |
| Botrytis. | (1) |
| Boundary value problems. | (1) |
| Braconidae. | (1) |
| Branching (Botany) | (1) |
| Bread. | (2) |
| Bread Marketing. | (1) |
| Bread Prices. | (1) |
| Brick trade South Carolina Summerville. | (1) |
| Broccoli. | (1) |
| Broccoli Varieties. | (1) |
| Broilers (Poultry) | (2) |
| Broilers (Poultry) United States. | (2) |
| Broilers (Poultry) West Virginia. | (1) |
| Browse. | (2) |
| Bryobia praetiosa Control. | (1) |
| Budgets, Personal Ohio Case studies. | (1) |
| Buffalo fish. | (1) |
| Building, Fireproof. | (1) |
| Building, Wooden. | (2) |
| Building, Wooden United States. | (1) |
| Building, Wooden United States Handbooks, manuals, etc. | (1) |
| Bulbs. | (3) |
| Bulls. | (1) |
| Burley tobacco Southern States. | (1) |
| Business ethics Bibliography. | (1) |
| Butterflies Maine. | (1) |
| Butyl rubber. | (1) |