I referred him to the Michael Fields Agricultural Institute in East
Troy, Wisconsin
There is another organization that can also provide that information
The Bio-Dynamic Farming and Gardening Association Inc.
Post Office Box 550, Kimberton, Pennsylvania 19442
Telephone: 1-800-516-7797 Fax: 610-983-3196.
A nice group of people who are dedicated to promoting biodynamic
practices.
Irwin Weintraub
Agriculture Resource Librarian
Rutgers University
weintraub@zodiac.rutgers.edu