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An Analysis of the Relationship Between Stream Water Quality and Regional Income Generated by Water-oriented Recreationists
Leland D. Megli
Pennsylvania State University. Institute for Research on Land and Water Resources
出版
Institute for Research on Land and Water Resources, Pennsylvania State University
, 1971
URL
http://books.google.com.hk/books?id=Nh9r2eKl0z8C&hl=&source=gbs_api