Publisher
- Central Intelligence Agency] : For sale by the Supt. of Docs., U.S. G.P.O.1
- David & Charles1
- Department of Conservation and Development, Division of Mineral Resources1
- Dept. of Mines1
- For sale by the Survey1
- Geological Survey of Canada1
- H. Field1
- Instituto Geográfico1
- Iowa Geological Survey1
- La Dirección1
- Lands and Surveys Dept1
- Le Service1
- Ministère de la Défense Nationale1
- National Geographic Society1
- Ontario, Dept. of Energy and Resources Management, Petroleum Resources Section1
- Québec Geological Services1
- Research Council of Alberta1
- Sahayogi Press1
- Servicío Nacional de Geología y Minería1
- Serviços Geológicos de Portugal1
