Humus
Subtitle: origin, chemical composition, and importance in nature
By: by Selman A Waksman.
Edition: 2d. rev. ed.
Publisher: The Williams & Wilkins company
Published: 1938
Place of publication: Baltimore
Language: eng
Number of pages: 526
Subjects: Humus.
Notes: "First edition, January, 1936 ; second edition, July, 1938."

Bibliography: p. 430-511.

COP.1, 3 WITHDRAWN.