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- BRGM4
- Egyptian Geological Survey and Mining Authority3
- Egyptian Mineral Resources Authority2
- U.S. Geological Survey ; For sale by USGS Information Services2
- Bureau de recherches géologiques et minières1
- Di zhi chu ban she1
- Geological Pub. House1
- Geological Survey of Canada,1
- Ministerio de Educación y Ciencia : Instituto Geológico y Minero de España : Sociedad Geológica de España1
- National Institute of Polar Research1
- U.S. Dept. of the Interior, U.S. Geological Survey ; For sale by U.S. Geological Survey Information Services1
- U.S. Geological Survey ; For sale by U.S. Information Services1
- U.S. Geological Survey, Central Energy Resources Team1
- s.n., Grafich Ghiani)1
