Results 271 to 280 of about 203,632,210 (294)
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Energy and Environmental Issues in Organic and Conventional Agriculture

Critical Reviews in Plant Sciences, 2008
D Pimentel, M G Paoletti
exaly  

Organic Agriculture and the Global Food Supply

Renewable Agriculture and Food Systems, 2007
Michael Jahi Chappell   +2 more
exaly  

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