1. Oliverian domes, related plutonic rocks, and mantling Ammonoosuc volcanics of the Bronson Hill anticlinorium, New England Appalachians Author/Creator: Leo, Gerhard W. Publication/Creation: Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1516-1520. Access & Availability: Loading
2. Oliverian domes, related plutonic rocks, and mantling Ammonoosuc volcanics of the Bronson Hill anticlinorium, New England Appalachians Author/Creator: Leo, Gerhard W., author Publication/Creation: Washington : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading
3. Ordovician and older rocks of the Bayhorse area, Custer County, Idaho Author/Creator: Hobbs, S. W. 1911- (Samuel Warren), author Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
4. Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho : stratigraphic and structural revisions, and new data on graptolite faunas Author/Creator: Dover, James H., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1980 Resource Type: Book Access & Availability: Loading
5. Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho : stratigraphic and structural revisions, and new data on graptolite faunas Author/Creator: Dover, James H. Publication/Creation: Washington : U.S. Govt. Print. Off, 1980 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1086-1090. Access & Availability: Loading
6. The ordovician symposium Author/Creator: El Paso Geological Society (Tex.) Publication/Creation: El Paso, Texas : [publisher not identified], 1969 Resource Type: Book Access & Availability: Loading
7. The Ordovician system : proceedings of a Palaeontological Association symposium, Birmingham, September 1974 Author/Creator: Ordovician System Symposium Birmingham, England) (1974 Publication/Creation: Cardiff : Published for The Paleontological Association by the University of Wales Press and the National Museum of Wales, 1976 Resource Type: Book Access & Availability: Loading
8. The Ordovician system in Australia, New Zealand and Antarctica : correlation chart and explanatory notes Publication/Creation: Ottawa, Ont. : Available from IUGS Secretariat, 1981 Resource Type: Book Access & Availability: Loading
9. The ordovician system in Canada : correlation chart and explanatory notes Author/Creator: Barnes, Christopher R. Publication/Creation: Ottawa : IUGS Secretariat, 1981 Resource Type: Book Access & Availability: Loading
10. The Ordovician system in the United States : correlation chart and explanatory notes Publication/Creation: [Paris] : International Union of Geological Sciences, [1982] Resource Type: Book Access & Availability: Loading