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Supertopics:
Maintaining Soil Fertility Miscellany

Maintaining Soil Fertility through 2010

Subtopics:
building soils for better crops (book)
webFred Magdoff and Harold van EsSustainable Agriculture Resear...2010-01-01
Food Security and Soil Quality (Advances in Soil Science)
Rattan Lal and B.A. Stewart (e...CRC Press2010-01-01
soil not oil (putting organic agriculture into development) (pdf)
webVandana Shiva, Patrick HoldenSoil Association2008-01-01
building fertile soil
webDoreen G. HowardMother Earth News2003-06-01
protecting riparian areas in farmland management
webBarbara C. BellowsATTRA2003-03-01
Soil Microorganisms and Higher Plants (book) (pdf)
webN. A. Krasil'nikovAcademy of Sciences of the USS...1961-01-01