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Measurement of agricultural ecological efficiency in Chongqing City based on undesired output SBM model and center of gravity model
FENG Hao, XIA Guo-feng, YOU Xian-ping
HUBEI AGRICULTURAL SCIENCES . 2024, (
3
): 177 -182 . DOI: 10.14088/j.cnki.issn0439-8114.2024.03.027
