1. Open file report Publication/Creation: Newark : University of Delaware, Delaware Geological Survey Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
2. 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
3. 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
4. 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
5. Outlines of the mineralogy and geology of Boston and its vicinity, with a geological map Author/Creator: Dana, James Freeman, 1793-1827 Publication/Creation: Boston : Published by Cummings and Hilliard, no. 1 Cornhill. University press ... Hilliard and Metcalf, 1818 Resource Type: Book Access & Availability: Loading
6. 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
7. Outline of the course of geological lectures given in Yale College Author/Creator: Silliman, Benjamin, 1779-1864 Publication/Creation: New Haven : Printed and published by H. Howe, 1829 Resource Type: Book Access & Availability: Loading
8. 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
9. 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
10. Outlines of geology : intended as a popular treatise on the most interesting parts of the science. Together with an examination of the question, whether the days of creation were indefinite periods ... Author/Creator: Comstock, J. L. 1789-1858. (John Lee) Publication/Creation: Hartford [Ct.] : D.F. Robinson & co., 1834 Resource Type: Book Access & Availability: Loading