PDF(3325 KB)
PDF(3325 KB)
PDF(3325 KB)
基于非期望产出和门槛回归模型的环渤海地区生态效率
({{custom_author.role_cn}}), {{javascript:window.custom_author_cn_index++;}}Eco-efficiency in the Bohai Rim area based on undesirable outputs and threshold regression model
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