Humus : origin, chemical composition, and importances in nature /
Waksman, S. A. 1888-1973
Humus : origin, chemical composition, and importances in nature / Selman A. Waksman. - 2nd ed., rev. - Baltimore : Williams & Wilkins, 1938. - xiv, 526 p. : ill. ; 23 cm.
First edition, Janurary, 1936; second edition, July, 1938.
Includes bibliographical references (p. 430-511).
Humus.--------
631.41 WAK
Humus : origin, chemical composition, and importances in nature / Selman A. Waksman. - 2nd ed., rev. - Baltimore : Williams & Wilkins, 1938. - xiv, 526 p. : ill. ; 23 cm.
First edition, Janurary, 1936; second edition, July, 1938.
Includes bibliographical references (p. 430-511).
Humus.--------
631.41 WAK