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	1.		NPK in Indian agriculture (1971 - 1975) Material type: Text; Format: print ; Literary form: Not fiction Publication details: New Delhi: European Nitrogen Service Programme, 1975 Availability: Items available for reference: National Science Library: Not for loan (3)Call number: R 016:632.82 L8, ... Add to cart (remove)
	2.		Nitrogen in Indian agriculture (1961-70): A bibliography of N, NP, NK, NPK and other related factors / European Nitrogen Service Programme Material type: Text; Format: print ; Literary form: Not fiction Publication details: New Delhi: European Nitrogen Service Programme, 1972 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: R 016:631.84/(540) L2. Add to cart (remove)

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