1. O I. G. G. Publication/Creation: S[ão] Paulo : [publisher not identified]. Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
2. O ziemiorodztwie Karpatów. Atlas Author/Creator: Staszic, Stanisław, 1755-1826 Publication/Creation: [Warszarwa] : Wydawn. Geologiczne, [1955] Resource Type: Book Access & Availability: Loading
3. O ziemiorodztwie Karpatów i innych gór i równin Polski Author/Creator: Staszic, Stanisław, 1755-1826 Publication/Creation: Warszawa : Wydawn. Geologiczne, 1955 Resource Type: Book Access & Availability: Loading
4. Oasis in space : earth history from the beginning Author/Creator: Cloud, Preston, 1912-1991 Publication/Creation: New York : W.W. Norton, [1988] Resource Type: Book Edition: 1st edition. Access & Availability: Loading
5. Obras de geología y paleontología Author/Creator: Kraglievich, Lucas, 1886-1932 Publication/Creation: La Plata : Taller de impresiones oficiales, 1940 Resource Type: Book Access & Availability: Loading
6. Observations de m. de Trébra sur l'intérieur des montagnes : précédées d'un plan d'une histoire générale de la minéralogie par m. de Veltheim, avec un discours préliminaire et des notes de m. le baron de Dietrich ... Author/Creator: Trebra, Friedrich Wilhelm Heinrich von, 1740-1819 Publication/Creation: Paris : De l'Imprimerie de Monsieur : Se trouve chez Didot le jeune [et] Didot fils aîné ; A Strasbourg : Chez Treuttel ..., 1787 Resource Type: Book Access & Availability: Loading
7. Observations on the earths, rocks, stones and minerals for some miles about Bristol, and on the nature of the hot-well, and the virtues of its water : by Mr]. Owen Author/Creator: Owen, Edward, of Paternoster Row, London Publication/Creation: London : Printed and sold by W. Johnston ..., 1754 Resource Type: Book Access & Availability: Loading
8. Observations on the geology and zoology of Abyssinia : made during the progress of the British expedition to that country 1867-68 Author/Creator: Blanford, W. T. 1832-1905. (William Thomas) Publication/Creation: London : Macmillan and Co. : R. Clay, Sons, and Taylor, printers, Bread Hill Street, 1870 Resource Type: Book Access & Availability: Loading
9. Observations on the geology, mineralogy, &c., of the Perkiomen Lead Mine in Pennsylvania Author/Creator: Wetherill, John Price, 1794-1853 Publication/Creation: [Philadelphia] : [Printed by J. Harding], [1826] Resource Type: Book Access & Availability: Loading
10. Observations on the geology of southern New Brunswick : made principally during the summer of l864 Author/Creator: Bailey, L. W. 1839-1925. (Loring Woart) Publication/Creation: Fredericton [N.B.] : G.E. Fenety, printer to the Queen's Most Excellent Majesty, 1865 Resource Type: Book Access & Availability: Loading
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