Softcover, [xx] + 197 + 3 pages, index, bibliography, glossary, 6 appendixes, 22 tables and charts, 80 b/w line illustrations and diagrams. *** 1st Edition. Copyright 1981. *** Gives info Cannabis plant characteristics. How quality is affected by environment. Cloning and other methods of propagation. Identification of male plants. Breeding new strains. THC production. Much more.