q=%E6%B0%B4%E7%8E%AF%E5%A2%83%E4%BF%9D%E6%8A%A4%E6%94%BF%E7%AD%96%E4%B8%8E%E7%AE%A1%E7%90%86%EF%BC%9A%E4%BB%A5%E7%BE%8E%E5%9B%BD%E4%B8%BA%E4%BE%8B%EF%BC%9Aa+case+study+of+the+united+states&searchType=standard&isFacet=true&view=standard&rows=10&sortWay=score&sortOrder=desc&searchWay0=marc&logical0=AND
rows=10&searchWay0=marc&logical0=AND
水环境保护政策与管理:以美国为例:a case study of the united states