$40.00 paper ISBN 978-0-8166-5727-8
172 pages, 5.875x9, 1969
Clyde M. Christensen was a professor of plant pathology at the University of Minnesota. He is the author of several other books including The Molds and Man: An Introduction to the Fungi and Common Edible Mushrooms. Henry H. Kaufmann was the manager of the Grain Research Laboratory of Cargill, Inc., an international farm products firm headquartered in Minneapolis.