Earthworms, their intensive propagation and use in biological soil-building; the Earthmaster system.
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TextPublication details: Roscoe, Calif., Earthmaster Publications, c1948.Edition: [5th rev. ed.]Description: 59 p. illus., port. 23 cmSubject(s): DDC classification: - 631.45
- SB998.E4 B35 1948
"An introduction to the more complete textbook, H̓arnessing the earthworm."̓-p. 54.
Pub. 1942 under title: The Earthmaster system for intensive propagation and use of domesticated earthworms.
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