Raising earthworms for profit
By: by Earl B. Shields.
Edition: 11th ed.
Published: 1974
Place of publication: [s.l.] : The Author
Language: eng
Number of pages: 128
Subjects: Earthworm culture.
Notes: Original edition issued in 1957 under title: Raising hybrid earthworms for profit.

Includes index.

Bibliography: p. 122-124.