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Organic Extracts for the Treatment of Rock Powder Fertilizers in Biological Agriculture
von Fragstein, Peter, Vogtmann, HartmutVolume:
1
Language:
english
Journal:
Biological Agriculture & Horticulture
DOI:
10.1080/01448765.1983.9754394
Date:
January, 1983
File:
PDF, 514 KB
english, 1983