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	1.		Best management practices: nutrient management by Agriculture and Agri-Food Canada. Publication details: Canada: Ontario Ministry of Agriculture, Food and Rural Affair 1997Availability: Items available for loan: Main (1)Call number: S591 .N87 A34x 1997. Place hold Add to cart (remove)
	2.		Biological approaches to sustainable soil systems by Uphoff, Norman ...[et al] (ed.). Series: Books in soils, plant and the environment Publication details: U.S.A.: CRC Press, 2006Availability: Items available for loan: Main (1)Call number: S591 .B512 2006. Place hold Add to cart (remove)
	3.		Soil fertility and organic matter as critical components of production systems : proceedings of a symposium / sponsored by Division S-4, S-2, S-3, and S-8 of the Soil Science Society of America in Chicago, IL, 3 Dec. 1985 by [Soil Science Society of America. Division S-4.]. Series: SSSA special publication: no 19 Publication details: Madison, WI, USA : The Society : American Society of Agronomy, 1987Availability: Items available for loan: Main (1)Call number: S590.2 .S625 1987. Place hold Add to cart (remove)

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