DING Yan-qin. 1988: The Concept on the Economic Threshold of Pest Population and it's Mathematical Model. Zoological Research, 9(2): 151-160.
Citation: DING Yan-qin. 1988: The Concept on the Economic Threshold of Pest Population and it's Mathematical Model. Zoological Research, 9(2): 151-160.

The Concept on the Economic Threshold of Pest Population and it's Mathematical Model

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