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2273367 
Journal Article 
Effects of Organic Fertilizer on the Contribution of Nitrogen Resource to Protein, Nicotine and PEE in Tobacco Leaf 
Guo Hong-xiang; Xu Fang-fang; Liu Wei-qun 
2012 
Life Science Journal
ISSN: 1097-8135 
335-340 
tobacco; isotope fertilizer; nitric compound; nitrogen resource