Secrets of the soil
By: Peter Tompkins and Christopher Bird.
Contributors: Bird, Christopher, 1928-
Edition: 1st ed.
Publisher: Harper & Row
Published: 1989
Place of publication: New York
Language: eng
Number of pages: 444
Subjects: Soils.; Soil management.; Organic farming.; Agricultural ecology.
Notes: Bibliography: p. 409-418.
Includes index.