Earthworms, their intensive propagation and use in biological soil-building; the Earthmaster system.

By: Material type: TextTextPublication details: Roscoe, Calif., Earthmaster Publications, c1948.Edition: [5th rev. ed.]Description: 59 p. illus., port. 23 cmSubject(s): DDC classification:
  • 631.45
LOC classification:
  • SB998.E4 B35 1948
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"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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