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Mainstreaming low-input agriculture. Schaller N. Journal of Soil and Water Conservation . 1990
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What is alternative agriculture? Am.J . Altern. Madden,J P. Agric . 1989
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Significance of ancient agricultural soils for long-term agronomic studies and sustainable agriculture research. Sandor J A. and Eash N S. Agronomy Journal . 1991
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Agriculture’ s search for sustainability and profitability. Ikerd J E. Journal of Soil and Water Conservation . 1990
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A perspective on agroecosystem science. Elliott E T and Cole C V. Ecology . 1989
[6]
The ecology of intercropping. Vandermeer J. . 1989
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Low-input , sustainable agriculture: Myth or method? J. Stenholm C W and Waggoner D B. Journal of Soil and Water Conservation . 1990