Bio-dynamic farming and gardening, soil fertility renewal and preservation [by] Ehrenfried Pfeiffer, with 18 illustrations; translated from German by Fred Heckel.
|Main Author:||Pfeiffer, Ehrenfried, 1899-1961.|
|Other Authors:||Heckel, Fredrick,|
|Language(s):||English ; German|
New York, Anthroposophic press; 1938.
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