Bio-Dynamic Sprays, Herbert H. Koepf $5.50 | Biodynamic Spray and Compost Preparations, The: Production Methods, by Christian von Wistinghausen, et al. $20.00 | Biodynamic Sprays and Compost Preparations, The: Directions for Use, by Christian von Wistinghausen, et al. $20.00 |
Building a Stirring Machine, by Anne Mendenhall $25.00 | Compost: What It Is, How It Is Made, What It Does, by Herbert H. Koepf  $6.00 | Earth, Plant and Compost, edited by William F. Brinton  $13.95 |
Handbook on Composting and the Bio-Dynamic Preparations, by George Corrin $7.50 | New Biodynamic Preparations, by Hugo Erbe $22.00 | Organic Manure: Its Treatment According to Indications by Rudolf Steiner, by Nikolaus Remer $10.95 |
Principles of Biodynamic Spray and Compost Preparations - Klett, 112 pp.  $20.00 |
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