The most useful introduction to alll aspects of mushroom cultivation is
The mushroom cultivator by P. Stamets and J. Chilton, Agarikon press. I am
sure that Paul will sell you a copy, his email is stamets1 at aol.com
todell at u.washington.edu
Dr. Thomas E. O'Dell, Ph.D.
Dept. of Botany, Box 355325
University of Washington
Seattle, WA, 98195-5325