U S Department of Agriculture, .
Soils Taxonomy; A Basic system of soil classification for making and interpreting soil surveys / Textual Documents U S Department of Agriculture. - U S D A : U S Department of Agriculture , 1978. - 158p ; .
Soil Conservation Soil Taxonomy
631.4 / U.S.D.A
Soils Taxonomy; A Basic system of soil classification for making and interpreting soil surveys / Textual Documents U S Department of Agriculture. - U S D A : U S Department of Agriculture , 1978. - 158p ; .
Soil Conservation Soil Taxonomy
631.4 / U.S.D.A