Soil science simplified.
Kohnke, Helmut, 1901-1991.
Soil science simplified. - [3d ed.] - West Lafayette, Ind., Balt Publishers [1966] - 78 p.
66015601
Soil science.
Agriculture
S591 / .K63 1966
631.4 KOH
Soil science simplified. - [3d ed.] - West Lafayette, Ind., Balt Publishers [1966] - 78 p.
66015601
Soil science.
Agriculture
S591 / .K63 1966
631.4 KOH