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- The Survey54
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- U.S. Geological Survey14
- Mineral Development Division, Department of Mines and Energy5
- Bureau of Geology2
- Geological Survey of Canada2
- North Carolina Dept. of Natural Resources and Community Development, Geological Survey Section2
- Alberta Environment : Alberta Research Council1
- Asarco Inc. ; Abitibi-Price Inc1
- Bureau de recherches géologiques et minières1
- Calgary, Alta. : The Survey1
- Florida Dept. of Natural Resources, Bureau of Geology1
- Goddard Space Flight Center1
- Interior-Geological Survey1
- Mineral Development Division1
- Mineral Development Division, Department of Mines and Energy, Government of Newfoundland and Labrador1
- Province of British Columbia, Ministry of Energy, Mines and Petroleum Resources1
- Survey of Israel1
- The Division1
- University of the State of N.Y., State Education Dept., Williams & Heintz Map Corp.)1
