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	1.	Nonpoint pollution of surface waters with phosphorus and nitrogen by Carpenter, S.R Caraco, N.F [coaut.] Correll, D.L [coaut.] Howarth, R.W [coaut.] Sharpley, A.N [coaut.] Smith, V.H [coaut.] Material type: Article Publication details: 1998 In: Ecological applications : a publication of the Ecological Society of America (USA). (Aug 1998). v. 8(3) p. 559-568 Availability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library (1)Call number: 1998-121795. Place hold Log in to add tags Add to cart (remove)
	2.	Relative preferences for soil conservation incentives among smallholder farmers: evidence from Malawi by Marenya, P.P Nkonya, E [coaut.] Smith, V.H [coaut.] Material type: Article Publication details: 2014 In: American Journal of Agricultural Economics Availability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library (1)Call number: CIS-7608. Place hold Log in to add tags Add to cart (remove)
	3.	Paying for agricultural productivity by Alston, J.M [ed.] Pardey, P.G [ed.] Smith, V.H [ed.] Material type: Text Publication details: Baltimore, MD (USA) : Johns Hopkins University\|IFPRI, 1999 Availability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library (1)Call number: 338.1 ALS. Place hold Log in to add tags Add to cart (remove)

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