11. Observations on the geology of the United States of America Author/Creator: Maclure, William, 1763-1840 Publication/Creation: Ulm/Donau : W. Fritsch, 1962. New York : Stechert-Hafner, 1962 Resource Type: Book Access & Availability: Loading
12. Observations on the geology of the West India Islands : from Barbadoes to Santa Cruz, inclusive Author/Creator: Maclure, William, 1763-1840 Publication/Creation: New Harmony, Ind. : Printed for the author, 1832 Resource Type: Book Access & Availability: Loading
13. Observations on the geology of the West India Islands : from Barbadoes to Santa Cruz, inclusive Author/Creator: Maclure, William, 1763-1840 Publication/Creation: New Harmony, Ind. : Printed for the author, 1832 Resource Type: Book Access & Availability: Loading
14. Observations on the junction between the eastern sandstone and the Keweenaw series on Keweenaw point, lake Superior Author/Creator: Irving, Roland Duer, 1847-1888 Publication/Creation: Washington : Govt. Print. Off, 1885 Resource Type: Book Access & Availability: Loading
15. Observing the Volcano World Volcano Crisis Communication Author/Creator: Fearnley, Carina J. Publication/Creation: Cham : Springer International Publishing : Imprint: Springer, 2018 Resource Type: Book Edition: 1st ed. 2018. Access & Availability: Loading
16. Obtaining valid geologic models from 3-D resistivity inversion of magnetotelluric data at Pahute Mesa, Nevada Author/Creator: Rodriguez, Brian D., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2015 Resource Type: Book Access & Availability: Loading
17. The occurrence and origin of analcite and meerschaum beds in the Green River formation of Utah, Colorado, and Wyoming Author/Creator: Bradley, Wilmot H. 1899-1979. (Wilmot Hyde) Publication/Creation: Washington : U.S. G.P.O., 1930 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 157-160. Access & Availability: Loading
18. Occurrence of diatomaceous earth near Kenai, Alaska Author/Creator: Plafker, George, 1929- Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1956 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1038-1040. Access & Availability: Loading
19. Occurrence of diatomaceous earth near Kenai, Alaska Author/Creator: Plafker, George, 1929- author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1956 Resource Type: Book Access & Availability: Loading
20. Occurrence of manganese in eastern Aroostook County, Maine Author/Creator: White, Walter S. 1915- (Walter Stanley) Publication/Creation: Washington : U.S. Govt. Print. Off, 1943 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 940 A-J. Access & Availability: Loading