Kohnke, Helmut, 1901-1991.
Soil physics / Helmut Kohnke. - New York : McGraw-Hill, [1968]. - ix, 224 p. : ill. - McGraw-Hill publications in the agricultural sciences. .
Soil physics.
Soil physics / Helmut Kohnke. - New York : McGraw-Hill, [1968]. - ix, 224 p. : ill. - McGraw-Hill publications in the agricultural sciences. .
Soil physics.