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Soil Management and Soil Quality for Organic Crops

Jeff MitchellMark GaskellRichard SmithCalvin FoucheSteven T Koike

出版	2000
URL	http://books.google.com.hk/books?id=OOD9uQEACAAJ&hl=&source=gbs_api

註釋

Sustaining and improving soil quality over the long term are frequently identified by organic farmers as their primary management goals.