A modified method of ecological footprint calculation and its application

Ecological Modelling - Tập 185 - Trang 65-75 - 2005
Sheng Zhao1, Zizhen Li2, Wenlong Li1
1State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000, China
2Department of Mathematics, Lanzhou University, Lanzhou, 730000, China

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