North American Quaternary Canis - Nowak, Ronald M. (Museum of Natural History, University of Kansas, 1979)

North central Montana black-footed ferret reintroduction : environmental assessment - U.S. Fish; Wildlife Service (The Dept, 1992)

North Park habitat management plan : CO-01 WHA-2 - United States. Bureau of Land Management. (U.S. Dept. of the Interior, Bureau of Land Management, 1977)

North Platte River area designated (noxious) weed treatment program : environmental assessment record - United States. Bureau of Land Management. (Wyoming Department of Agriculture, 1978)

Northwest Montana Libby/Hungry Horse Dams wildlife mitigation : Columbian sharp-tailed grouse : final report - Montana. Department of Fish, Wildlife,; Parks (U.S. Dept. of Energy, Bonneville Power Administration, Division of Fish and Wildlife, 1992)

Notes on some mammals from Jalisco, Mexico - Genoways, Hugh H. (Museum, Texas Tech University, 1973)

Notes on some mammals of north-central Texas - Jones, Clyde, 1935 - (Texas Tech University Press, 1987)

Notes on the mammals of the Lake Maxinkuckee region - Evermann, Barton Warren, 1853 -1932 (Williams & Wilkins company, 1911)

Notes on the natural history of portions of Montana and Dakota; being the substance of a report to the Secretary of War on the collections made by the North Pacific Railroad Expedition of 1873, Gen. D.S. Stanley, commander - Allen, J. A. (Joel Asaph), 1838 -1921 (1874)

Notes on the natural history of the expedition conducted by Brig. General George A. Crook, U.S.A - Mearns, Edgar Alexander, 1856 -1916 (1884)

Notes sur la médecine et la botanique des anciens Mexicains - Gerste, A. (Impr. Polyglotte vaticane, 1909)

Nova acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmanni et Filii, 1895)

Novi commentarii Academiae Scientiarum Imperialis Petropolitanae - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Typis Academiae Scientarum, 1775)

Occasional papers - Texas Tech University. Museum, (The Museum, 1985)

Occasional papers - Texas Tech University. Museum, (The Museum, 1986)

Occasional papers - Texas Tech University. Museum, (The Museum, 1987)

Occasional papers - Texas Tech University. Museum, (The Museum, 1988)

Occasional papers - Texas Tech University. Museum, (The Museum, 1989)

Occasional papers - Texas Tech University. Museum, (The Museum, 1990)

Occasional papers - Texas Tech University. Museum, (The Museum, 1991)

Occasional papers - Texas Tech University. Museum, (The Museum, 1999)

Occasional papers - Texas Tech University. Museum, (The Museum, 2003)

Occasional papers - Texas Tech University. Museum, (The Museum, 2014)

Occasional papers - Texas Tech University. Museum, (The Museum, 2020)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1940)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1973)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1974)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1984)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1989)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1990)

Occasional papers of the Museum of Zoology, University of Michigan - University of Michigan. Museum of Zoology. (University of Michigan, 1922)

Occasional papers of the Museum of Zoology, University of Michigan - University of Michigan. Museum of Zoology. (University of Michigan, 1913)

Occasional papers of the Museum of Zoology, University of Michigan - University of Michigan. Museum of Zoology. (University of Michigan, 1917)

Occasional papers of the Museum of Zoology, University of Michigan - University of Michigan. Museum of Zoology. (University of Michigan, 1921)

Occasional papers - Tulane University. Museum of Natural History. (The Museum, 1978)

Occasional papers - Tulane University. Museum of Natural History. (The Museum, 1982)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1947)

Oldman Reservoir mule deer : report on fawn studies, 1992 to 1995 - Alberta. Alberta Environmental Protection. (Axys Environmental Consulting Ltd, 1995)

Oldman River Dam mule deer : adult female ecology in a changing landscape - Axys Environmental Consulting. (Wildlife & Company Ltd, 1998)

On the causative factors responsible for the change in the bison range - Flerov, K. K. (1961)

On the geology and natural history of the upper Missouri :Being the substance of a report made to Lieut. G.K. Warren, T.E. U.S.A - Hayden, F. V. (Ferdinand Vandeveer), 1829 -1887 (Printed by C. Sherman & son, 1862)

On the plains, and among the peaks, or, How Mrs. Maxwell made her natural history collection - Ridgway, Robert, 1850 -1929 (Claxton, Remsen & Haffelfinger, 1879)

Ornithological journal and register - Mearns, Edgar Alexander, 1856 -1916 (1874)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1896)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1898)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1901)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1902)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1906)

Our living resources : a report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems - United States. National Biological Service. (U.S. Dept. of the Interior, National Biological Service, 1995)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Pacific seabirds : a publication of the Pacific Seabird Group - Pacific Seabird Group. (The Group, 2004)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1913)

Palaeontology - Palaeontological Association (Palaeontological Association, 1997)

Paleontological bulletin / by Edward D. Cope - Cope, E. D. (Edward Drinker), 1840 -1897 (s.n.], 1872)

Paleontological investigations at Mineral Hill Cave - Broughton, Jack M. (U.S. Department of the Interior, Bureau of Land Management, Elko Field Office, 2004)

Papers concerning the palæontology of California, Arizona, and Idaho - Merriam, John C. (John Campbell), 1869 -1945 (Carnegie Institution of Washington, 1934)

Part I. Palæontology - Hall, James, 1811 -1898 (Govt. print. off, 1877)

A Partial bibliography of the mammals of Wyoming and adjacent states with special reference to density and habitat affinity - United States. Bureau of Land Management. (Wyoming Game & Fish Department, 1978)