Harnessing The Earthworm

 Dr. Barrett describes his book as "A practical inquiry into soil building, soil conditioning, and plant nutrition through the action of earthworms, with instruction for the intensive propagation and use of domesticated earthworms in biological soil building." It has facts, figures, and illustrations showing how earthworms can be applied to condition your soil for better plants, more beautiful gardens, and richer crops. A valuable classic! 166 Pages

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