dong bei mu ben zhi dong bei mu ben zhi wu tu zhi dongbeimubenzhiw00lius Year: 1955 泉北木本植物圖詰 圖版XXX 玉泉楊Populus Nakaii Skv.: 1.葉芽及果序；2.葉緣鋸齒；3.分佈圖,

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