Pfeiffer, Ehrenfried. | Bio-Dynamic gardening and farming
VIAF ID: 6131147727706464710009 ( Work )
Permalink: http://viaf.org/viaf/6131147727706464710009
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Pfeiffer, Ehrenfried.
Language | Title | Expression | Sources |
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Dutch | Vruchtbaarheid der aarde : haar behoud en haar vernieuwing : het biologisch-dynamische principe in de natuur | 1938 |