Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1980)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1982)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1983)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1986)

Raptor research news - Raptor Research Foundation. (Raptor Research Foundation, 1967)

A record of Nebraska ornithology-pt. I - Wolcott, Robert Henry, 1868 -1934 (Under the Direction of H. B. Ward, 1903)

The Record of zoological literature (J. van Voorst, 1868)

The Record of zoological literature (J. van Voorst, 1869)

Records of the Australian Museum - Australian Museum (Printed by order of the Trustees, 2010)

Recreation - Shields, G. O. (George Oliver), 1846 -1925 (G.O. Shields (Coquina), 1900)

Relationships between breeding birds and vegetation in four woodland types of the Little Missouri National Grasslands - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1986)

Relationships of birds and spruce budworms : literature review and annotated bibliography - Crawford, Hewlette S. (1982)

Repertorio fisico-natural de la isla de Cuba - Poey, Felipe, 1799 -1891 (Impr. del gobierno y capitanía general por S.M. [etc, 1865)

Report - New York (State). Forest, Fish; Game Commission. (1895)

Report - Harvard University. Museum of Comparative Zoology. (1862)

Report - Harvard University. Museum of Comparative Zoology. (1886)

Report of a reconnaissance from Carroll, Montana Territory, on the upper Missouri, to the Yellowstone National Park, and return, made in the summer of 1875 - Ludlow, William, 1843 -1901 (Govt. Print. Off, 1876)

Report of an expedition down the Zuni and Colorado rivers - United States. Army. Corps of Topographical Engineers (R. Armstrong, public printer, 1853)

Report of explorations across the Great Basin of the territory of Utah : for a direct wagon-route from Camp Floyd to Genoa in Carson Valley in 1859 - Baird, Spencer Fullerton, 1823 -1887 (G.P.O, 1876)

Report of progress for 1878-79 - Geological Survey of Canada (Dawson Bros, 1880)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1837)

Report of the Central Park Menagerie - Central Park Menagerie (New York, N.Y.) (Central Park Menagerie, 1890)

Report of the Commissioner of Agriculture ... - United States. Department of Agriculture. (G.P.O, 1863)

Report of the cruise of the revenue marine steamer Corwin in the Arctic Ocean in the year 1884 - Cantwell, John C. (Gov't print. off, 1889)

Report of the cruise of the revenue marine steamer Corwin in the Arctic Ocean in the year 1884 - United States. Revenue-Cutter Service. (Govt. Print. Off, 1889)

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1897)

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1905)

Report of the geological exploration of the fortieth parallel - Eaton, Daniel Cady, 1834 -1895 (G.P.O, 1877)

Report of the Geological Survey of Ohio - Geological Survey of Ohio. (Nevins & Myers, state printers, 1882)

Report of the geological survey of Ohio - Geological Survey of Ohio. (Nevins & Meyers, 1882)

Report of the Mistassini expedition, 1884-5 - Macoun, James Melville, 1862 -1920 (Dawson Bros, 1885)

Report of the State board of agriculture on the work of extermination of the gypsy moth - Massachusetts. State board of agriculture. (Wright & Potter printing co., state printers, 1893)

Report of the State Entomologist on the noxious and beneficial insects of the state of Illinois - Illinois State Entomologist. (State Entomologist, 1877)

Report of the state zoölogist - Herrick, C. L. (Clarence Luther), 1858 -1904 (1892)

Report of the United States Entomological Commission - United States Entomological Commission. (Govt. print. off, 1878)

Report of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1885)

Report of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1887)

[Report of a voyage made to the Canadian Labrador coast ; Catalogue of plants and birds of the north shore] - Saint-Cyr, D. N. (Dominique Napoléon), 1826 -1899 (s.n, 1887)

Report on bird migration in the Mississippi valley in the years 1884 and 1885 - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Govt. Print. Off, 1888)

Report on exploration in the Labrador peninsula along the East Main, Koksoak, Hamilton, Manicuagan and portions of other rivers in 1892-93-94-95 - Geological Survey of Canada (S.E. Dawson, 1896)

Report on explorations of the Churchill and Nelson Rivers and around God's and Island Lakes, 1879 - Geological Survey of Canada (Dawson Brothers, 1880)

Report on the birds of Pennsylvania : with special reference to the food habits, based on over four thousand stomach examinations - Warren, Benjamin Harry, 1858 -1926 (E.K. Meyers, State Printer, 1890)

Report on the birds of Pennsylvania : with special reference to the food habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania. With special reference to the food-habits, based on over four thousand stomach examinations - Pennsylvania. Ornithologist. (E. K. Meyers, state printer, 1890)

Report on the birds of Pennsylvania. With special reference to the food-habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania; with special reference to the food habits, based on over four thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1890)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1907)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1911)

Report upon cotton insects, prepared under the direction of the commissioner of agriculture in pursuance of an act of Congress approved June 19, 1878 - Comstock, John Henry, 1849 -1931 (Gov't. print. off, 1879)

Report upon natural history collections made in Alaska : between the years 1877 and 1881 - Bean, Tarleton H. (Tarleton Hoffman), 1846 -1916 (Government Printing Office, 1887)

Report upon natural history collections made in Alaska between the years 1877 and 1881 - Bean, Tarleton H. (Tarleton Hoffman), 1846 -1916 (Govt. Print. Off, 1887)

Report upon ornithological specimens collected in the years 1871, 1872, and 1873 - Geographical Surveys West of the 100th Meridian (U.S.) (Govt. Print. Off, 1874)

Report upon the condition and progress of the U.S. National Museum during the year ending June 30 ... - United States National Museum (G.P.O, 1905)

Report upon United States Geographical surveys west of the one hundredth meridian - Geographical Surveys West of the 100th Meridian (U.S.) (G.P.O, 1875)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1858)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1853)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1859)

Research in China - Walcott, Charles D. (Charles Doolittle), 1850 -1927 (Carnegie institution of Washington, 1907)

Research plan for lands administered by the U.S. Department of the Interior in the Interior Columbia Basin and Snake River Plateau - Geological Survey (U.S.) (U.S. Geological Survey Forest and Rangeland Ecosystem Science Center, 2002)

Resource management report - Ontario. Fish; Wildlife Branch.

Response of breeding birds to commercial clearcutting of aspen in southwestern Colorado - Crouch, Glenn LeRoy, 1929 - (1987)

Results of a biological reconnoissance of the Yukon River region - Osgood, Wilfred Hudson, 1875 -1947 (G.P.O, 1900)

Results of boreal owl (Aegolius funereus) surveys on the Jefferson Division of the Lewis & Clark National Forest - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1991)

Results of the Archbold Expeditions. No. 73, Birds of the Archbold Biological Station, Lake Placid, Florida - Amadon, Dean (American Museum of Natural History, 1956)

Returns from banded birds, 1920 to 1923 - United States. Department of Agriculture. (U.S. Dept. of Agriculture, 1924)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1914)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1919)

A review of the birds of Connecticut - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Tuttle, Morehouse & Taylor, Printers, 1877)

A revised catalogue of the birds of Kansas : with descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

A revised catalogue of the birds of Kansas. With descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

Revised list of birds of Central New York - Rathbun, Frank R., (Harvard local name) (Daily Advertiser and Weekly Journal Book and Job Printing House, 1879)

Revised list of the vertebrated animals now or lately living in the gardens of the Zoological society of London. 1872 - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1872)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1911)

Revue générale des sciences pures et appliquées ([s.n.], 1922)

Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1898)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1941)

Rio Blanco Oil Shale Project. Tract C-a / [c]by Rio Blanco Oil Shale Project. no.8, Progress report - CDM/Limnetics. (Rio Blanco Oil Shale Project, 1974)

Riverby - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1895)

Riverby - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1902)