南京林业大学学报（自然科学版）
The Dynamic Changes of Contents of Proteins and Three Enzymes of Nitrogen Metabolism in Poplar
GUO Yan-qing1, YANG Yu-zhen1,2, GUO Hong-yan1, PENG Fang-ren1*
JOURNAL OF NANJING FORESTRY UNIVERSITY . 2006, (06): 109 -113 .  DOI: 10.3969/j.jssn.1000-2006.2006.06.026

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