21. 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
22. The occurrence of metalliferous deposits in the Yukon and Kuskokwim Regions, Alaska Author/Creator: Mertie, John Beaver, 1888-1980 Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1922 Resource Type: Book Is Part Of: Bound with: QE75 .B9 NO.739 ; The Alaskan mining industry in 1921 / Access & Availability: Loading
23. Ocean floor structures northeastern Rat Islands, Alaska Author/Creator: Snyder, George L. 1927- (George Leonard), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1957 Resource Type: Book Access & Availability: Loading
24. Ocean floor structures northeastern Rat Islands, Alaska Author/Creator: Snyder, George L. 1927- (George Leonard) Publication/Creation: Washington [D.C.] : U.S. G.P.O., 1957 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1028 A-H. Access & Availability: Loading
25. Of rock and rivers : seeking a sense of place in the American West Author/Creator: Wohl, Ellen E., 1962- Publication/Creation: Berkeley, Calif. : University of California Press, [2009] Resource Type: Book Access & Availability: Loading
26. Office of State Geologist, Detroit, Feb. 3, 1840 : to the Hon[orable] Speaker of the House of Representatives : Sir--I have the honor herewith to transmit to the Hon[orable] House of Representatives, the third annual report and accompanying documents from this department Author/Creator: Michigan. Geological Survey Publication/Creation: [Detroit, Mich.?] : [publisher not identified], [1840] Resource Type: Book Access & Availability: Loading
27. Offshore geology and geomorphology from Point Piedras Blancas to Pismo Beach, San Luis Obispo County, California Author/Creator: Watt, Janet T., cartographer Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2015 Resource Type: Map Access & Availability: Loading
28. Ohio hill country : a rewoven landscape Author/Creator: Platt, Carolyn V., 1943- author Publication/Creation: Kent, Ohio : The Kent State University Press, 2012 Resource Type: Book Access & Availability: Loading
29. Ohio in the making : a brief geological history of Ohio Author/Creator: Harper, Arthur R. Publication/Creation: Columbus : College of Education, Ohio State Univ., 1948 Resource Type: Book Access & Availability: Loading
30. Ohio intercollegiate field trip guides, 1950-51 to 1969-70. Author/Creator: Frank, Glenn W. Publication/Creation: [Kent, Ohio] : K.S.U. Printing Service, 1969 Resource Type: Book Access & Availability: Loading