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八种华北树木形成层季节活动及韧皮部与木质部形成的研究
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SEASONAL CAMBIAL ACTIVITY AND FORMATION OF PHLOEM AND XYLEM IN EIGHT FOREST TREE SPECIES GROWN IN NORTH CHINA
Zhang Ying-bo;Zheng Huai-ming;Long Rui-zhi;Yang Bing-cai
林业科学 . 1982, (4): 366 -379 .