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	1.		Nitrogen cycle & nitrogen fixation by Perera , K. Sarath D Language: English Language Publication details: Colombo Sampath publishers & printers 2003 2003 Availability: Items available for loan: Agricultural Library (4)Collection, call number: Lending Collection 577.145PER, ... Place hold Add to cart (remove)
	2.		Food, farming and environment Collins advanced modular sciences by Allen , Damian Williams , Gareth Coles , Mike Language: English Language Publication details: London Collins Educational 1997 1977 Availability: Items available for loan: Agricultural Library (2)Collection, call number: Reference Collection 630ALL, ... Place hold Add to cart (remove)
	3.		Agriculture and the nitrogen cycle assessing the impact of fertilizer use on food production and the environment by Mosier, Arvin R [Editor] Syeres , J Keith [Editor] Freney , John R [Editor] Series: scope 65 Publication details: washington Island press 2004 2004 Availability: Items available for loan: Agricultural Library (2)Collection, call number: Lending Collection 631.8AGR, ... Place hold Add to cart (remove)

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