EARTHWORMS - For Ecology & Profit - Scientific Earthworm Farming, written by R. Gaddie & D. Douglas, published by Bookworm Publishing Co. in 1977. This very informative book consists of 180 pages with 11 chapters, some of which are: 1. A Study of the Earthworm 2. Planning & Installing the Earthworm Farm 3. Feeds & Feeding Methods 4. Enemies, Insects, Pests & Diseases 5. Harvesting, Grading & Counting 6. Ecological Use of. There are plenty of black & white illustrations, sketches and charts throughout.<P> Internally in good condition. Externally there is bumping to corners and edges of covers.There is no structural damage.<P> A very informative book and a great addition to your Library.