| A 1.9:2170/6 | Roofing Farm Buildings |
| A 1.9:2239/6 | Growing Cauliflower and Broccoli |
| A 1.38/2: | Agricultural Factbook |
| A 1.68:1637 | Soil Biology Primer |
| A 98.2:EA 7 | Eat smart, play hard [kit] / United States Department of Agriculture,
Food and Nutrition Service |
| A.175:769 | America’s Diverse Family Farms |
