Earthworms, their intensive propagation and use in biological soil-building; the Earthmaster system.
Barrett, Thomas Jason, 1884-
Earthworms, their intensive propagation and use in biological soil-building; the Earthmaster system. - [5th rev. ed.] - Roscoe, Calif., Earthmaster Publications, c1948. - 59 p. illus., port. 23 cm.
"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.
agr48000512
Earthworm culture.
Soils.
SB998.E4 / B35 1948
631.45
Earthworms, their intensive propagation and use in biological soil-building; the Earthmaster system. - [5th rev. ed.] - Roscoe, Calif., Earthmaster Publications, c1948. - 59 p. illus., port. 23 cm.
"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.
agr48000512
Earthworm culture.
Soils.
SB998.E4 / B35 1948
631.45