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Principal Component Analysis Used in Optimal Selection of Walnut
徐永杰 吴代坤 罗治建 李双龙 谭志红 谭学春 马林江 戴应金
Chinese Agricultural Science Bulletin . 2011, (25): 45 -48 .  DOI: 10.11924/j.issn.1000-6850.2011-0952