| Earthworms for Ecology and Profit Scientific Earthworm Farming | | | Author:
| Gaddie, Ronald E.
Douglas, Donald | | ISBN: | 978-0-916302-05-4 | | Publication Date: | Jan 1975 | | Publisher: | Bookworm Publishing Company, Incorporated
| | Book Format: | Paperback | | List Price: | USD $6.95 |
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