Soil survey manual
Soil survey manual
- Washington : Department of Agriculture, 1951
- 503 p. : ilus.
- Agriculture handbook ; 18 .
- Agriculture handbook ; 18 .
39561
Suelos.
Suelos--E.U.A.
631.47 / E83
39561
Suelos.
Suelos--E.U.A.
631.47 / E83
