 | 12 years of achievement under Public law 480 | (1) |
| A 20-year investigation in a sugar maple-beech stand in southern Michigan | (1) |
| 22 plants poisonous to livestock in the western states | (1) |
| 100 native forage grasses in 11 Southern States | (1) |
| 1973 European red mite control evaluations | (1) |
| 1973 handbook of agricultural charts | (1) |
| The 1964-65 cropland conversion program | (1) |