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Publisher
- Santa Barbara Museum of Natural History,294
- Geological Survey of Canada,136
- Maine Geological Survey,65
- Geological Society of America,63
- Army Map Service, U.S. Army,62
- Dibblee Geological Foundation,62
- U.S. Geological Survey,61
- California Division of Mines and Geology,60
- Montana Bureau of Mines and Geology,50
- Ontario Geological Survey,48
- Zhongguo di zhi da xue chu ban she,44
- U.S. Geological Survey ;42
- New Mexico Bureau of Mines and Mineral Resources,38
- The Survey,28
- Chishitsu Chōsajo,27
- Geological Survey of Japan,24
- Kōgyō Gijutsuin Chishitsu Chōsajo,19
- The Survey ;18
- Army Map Service,17
- Geological Survey ;17