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Graphic-locator Method in Geologic Mapping
David Joseph VarnesTommy L. FinnellEdwin V. Post
出版U.S. Government Printing Office, 1959
URLhttp://books.google.com.hk/books?id=y6kPAAAAIAAJ&hl=&source=gbs_api
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註釋A description of a device for locating points on a contour map and how it has been used in geologic mapping.