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Ambio|June 25, 2002
Nitrogen fertilizers: meeting contemporary challengesPaul E Fixen, Ford B West
Journal of the Science of Food and Agriculture|March 15, 2012
World fertilizer nutrient reserves: a view to the futurePaul E Fixen, Adrian M Johnston
Science in China. Series C, Life Sciences|June 16, 2010
Capitalizing on multi-element interactions through balanced nutrition--a pathway to improve nitrogen use efficiency in China, India and North AmericaPaul E Fixen, Jin Jiyun, K N Tiwari, et al.
Science in China. Series C, Life Sciences|March 4, 2006
Capitalizing on multi-element interactions through balanced nutrition--a pathway to improve nitrogen use efficiency in China, India and North AmericaPaul E Fixen, Jiyun Jin, K N Tiwari, et al.
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