Factors of soil formation
Jenny, Hans
Factors of soil formation - 1a ed - New York : McGraw-Hill Book Co., 1941. - 281 p. ; 21 cm.
A systems of quantitative pedology
Factors of soil formation - 1a ed - New York : McGraw-Hill Book Co., 1941. - 281 p. ; 21 cm.
A systems of quantitative pedology