Soil conservation
Código CCN: 073149-8
| ISSN (Online): 0038-0725 |
| দেশ: Não informado |
| প্রকাশক: U.S. Department of Agriculture, Soil Conservation Service |
| Imprenta:
Washington:
U.S. Department of Agriculture, Soil Conservation Service,
1935
|
| Área de numeração: Vol. 1 (1935)-Vol. 45, No. 8 (1980) |