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DOI：10.3969/j.issn.1004-874X.2009.09.079
Author NameAffiliation
范永柏, 钟木安 华南农业大学经济管理学院,广东,广州,510642
东莞市农业局,广东,东莞,523888
东莞市农业局,广东,东莞,523888 
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