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Water Resources Research Catalog

United States. Office of Water Research and Technology

出版	U.S. Government Printing Office, 1973
URL	http://books.google.com.hk/books?id=YxtBAQAAIAAJ&hl=&source=gbs_api

註釋

Beginning with vol. 9, only new and continuing but modified projects are listed. Vols. 8- should be kept as a record of continuing but unchanged projects.