Ehrenfried Pfeiffer
Ehrenfried Pfeiffer (19 February 1899 – 30 November 1961) was a German scientist, soil scientist, leading advocate of biodynamic agriculture, anthroposophist and student of Rudolf Steiner. Provided by Wikipedia
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Published: [2020]
Superior document: Title is part of eBook package: De Gruyter DGBA Physical Sciences <1990
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