This article offers the research on the nature, scope, way of efficient supply of various water conservancy products and service.
从公共经济学角度对各种水利产品及服务的性质、范围和有效提供方式进行了研究。
This article offers the research on the nature, scope, way of efficient supply of various water conservancy products and service.
从公共经济学角度对各种水利产品及服务的性质、范围和有效提供方式进行了研究。
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