01/05/2004

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http://pure.qub.ac.uk/portal/en/publications/evaluation-of-current-fertilizer-practice-and-soil-fertility-in-vegetable-production-in-the-beijing-region(b6b77f3e-85fe-4188-8cbd-3bede7db4c19).html

http://dx.doi.org/10.1023/B:FRES.0000025293.99199.ff

http://pure.qub.ac.uk/ws/files/369169/ChenQing%20et%20al%202004.pdf

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Chen , Q , Zhang , X S , Zhang , H Y , Christie , P , Li , X L , Horlacher , D & Liebig , H P 2004 , ' Evaluation of current fertilizer practice and soil fertility in vegetable production in the Beijing region ' Nutrient Cycling in Agroecosystems , vol 69 , no. 1 , pp. 51-58 . DOI: 10.1023/B:FRES.0000025293.99199.ff

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