Basis of Potentization Research, The, by Theodor Schwenk $14.95 | Chromotography Applied to Quality Testing, by Ehrenfried Pfeiffer $8.00 | Observations in the Field of Formative Forces in Nature: Methods and Results, by Schmidt $4.50 |
Organic Growing Media: Research into Use of Compost for Potting Mix Nutrition, by William F. Brinton and David Tresemer $16.00 | Organic, Biodynamic and Conventional Cropping Systems: A Long Term Comparison, by B.D. Petterson and E. v. Wistinghausen $16.00 | Quality and Method - Tinstad, 240 pp, hardcover - OUT OF STOCK $48.00 |
Research in Biodynamic Agriculture: Methods and Results - Koepf, 84 pp. $9.95 |
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