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	1.	Image from Amazon.com	Estimating fertilizer requirements : a quantitative approach / J.D. Colwell. by Colwell, J.D Material type: Text; Format: print ; Literary form: Not fiction Publication details: Wallingford : CAB International, 1994 Availability: Items available for loan: MUARIK Library - Closed Access (6)Call number: 631.8 COL, ... Main Library - IDA Extension (2)Call number: 631.8 COL, ... Place hold Save to lists Add to cart (remove)
	2.	Image from Amazon.com	Computations for studies of soil fertility and fertilizer requiremen ts / by J.D. Colwell. by Colwell, J. D Commonwealth Agricultural Bureaux Material type: Text Publication details: Slough : Commonwealth Agricultural Bureaux, 1978 Availability: Items available for loan: College of Natural Sciences Library- CONAS (2)Call number: Q 631.81 COL, ... Department of Environmental Management -DEM (5)Call number: Q 631.81 COL, ... Place hold Save to lists Add to cart (remove)
	3.	Image from Amazon.com	Computations for studies of soil fertility and fertilizer requiremen ts / by J.D. Colwell. by Colwell, J. D Commonwealth Agricultural Bureaux Material type: Text Publication details: Slough : Commonwealth Agricultural Bureaux, 1978 Availability: No items available. Save to lists Add to cart (remove)
	4.	Image from Amazon.com	Computations for studies of soil fertility and fertilizer requiremen ts / by J.D. Colwell. by Colwell, J. D Commonwealth Agricultural Bureaux Material type: Text Publication details: Slough : Commonwealth Agricultural Bureaux, 1978 Availability: No items available. Save to lists Add to cart (remove)