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中国农学通报
昌平流村镇3种近濒危地产小苹果树资源调查
兰彦平,周志军,姚砚武,孙明德
Resources survey on three kinds of endangered native crab-apple tree in LiucunTown in Changping district
孙明德
中国农学通报 . 2015, (7): 76 -80 .  DOI: 10.11924/j.issn.1000-6850.casb14110151