西北干旱内陆河流域生态安全保障体系建设初步研究 --以石羊河流域为例
서북간한내륙하류역생태안전보장체계건설초보연구 --이석양하류역위례
Preliminary studies on establishment of ecological safety system in dry inland river basins of northwest --a case study of Shiyanghe river basin
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