Publisher
- Army Topographic Command,Hubbard Scientific inc1
- Association of American Geographers1
- Bundesanstalt für Bodenforschung1
- Del. Geological Survey, University of Del1
- Denoyer-Geppert1
- Dept. of Mines1
- Dept. of Mines, Resources and Environmental Management1
- Direcção Geral de Minas e Serviços Geológicos1
- Directorate of National Mapping1
- Geological Survey1
- Geological Survey Dept1
- Geological Survey of Canada, (Surveys and Mapping Branch)1
- Geological Survey of Japan1
- Geological Survey of Wyoming1
- Gita Shenassi Co., Ltd1
- Gouvernement du Québec, Ministère des richesses naturelles, Service des gîtes minéraux1
- Hammond Inc1
- Hydrographic Office1
- Instituto Geográfico Nacional1
- Iowa Geological Survey1
