Cambrian Geology and Paleontology Charles Doolittle Walcott Published: 1910 Total Pages: 662 Get eBook
Second Contribution to the Studies on the Cambrian Faunas of North America Charles Doolittle Walcott Published: 1886 Total Pages: 372 Get eBook
Bulletin of the United States Geological Survey Geological Survey (U.S.) Published: 1891 Total Pages: 1222 Get eBook
The Quarterly Journal of the Geological Society of London Geological Society of London Published: 1917 Total Pages: 922 Get eBook
Proceedings of the Boston Society of Natural History Boston Society of Natural History Published: 1890 Total Pages: 636 Get eBook
Canadian Geological Classification for the Province of Quebec Jules Marcou Published: 1889 Total Pages: 36 Get eBook