Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1896)

Protected Landscapes: experience around the world. Prepared for the International Symposium on Protected Landscapes, Grange-over-Sands, England 5-10 October 1987 (1987)

qing zang gao yuan yan jiu heng duan shan kao cha zhuan ji 2 - Zhongguo ke xue yuan. Qing zang gao yuan zong he ke xue kao cha dui (bei jing ke xue ji shu chu ban she, 1986)

Raptor management information system : users' guide for an interactive REX2 computer program - United States. Bureau of Land Management. (Bureau of Land Management, 1982)

Raptor management, the state of the art in 1980 - United States. Bureau of Land Management. ([Washington, D.C.?], 1980)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1972)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1974)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1975)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1976)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1977)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1978)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1979)

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

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1981)

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

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1984)

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

Raptor research news - Raptor Research Foundation. (Raptor Research Foundation, 1970)

Raptor round up - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2003)

Raptor round up - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2004)

Raubvögel (Fr. Eugen Köhler, 1903)

Reading Naturalist. Reading - Reading Natural History Society. (2011)

Reading Naturalist. Reading - Reading Natural History Society. (2013)

Reading Naturalist. Reading - Reading Natural History Society. (2014)

Reading Naturalist. Reading - Reading Natural History Society. (2015)

Reading Naturalist. Reading - Reading Natural History Society. (2017)

Reading Naturalist. Reading - Reading Natural History Society. (2019)

Reading Naturalist. Reading - Reading Natural History Society. (2020)

Reading Naturalist. Reading - Reading Natural History Society. (2021)

Reading Naturalist. Reading - Reading Natural History Society. (2022)

Reading Naturalist. Reading - Reading Natural History Society. (2023)

Recherches sur la glande uropygienne des oiseaux - Paris, Paul, 1875 -1938. (Librairie A. Schulz, 1913)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1954)

Report and Proceedings of the Belfast Natural History and Philosophical Society - Belfast Natural History; Philosophical Society. (1917)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1912)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1915)

Response of juvenile raptors to DDT in the diet - Seidensticker, John. (1966)

Revista de la Academia Canaria de Ciencias - Academia Canaria de Ciencias. (Academia Canaria de Ciencias, 2002)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1909)

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

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.], 1918)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1933)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1937)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1948)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1956)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1967)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1969)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1978)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1982)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1989)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1991)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1911)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1912)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1913)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1914)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1920)

Rovartani lapok : havi folyóirat különös tekintettel a hasznos és kártékony rovarokra - Magyar Entomologiai Társaság. (Magyar Entomologiai Társaság, 1914)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1980)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1981)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1982)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1983)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1984)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1986)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1987)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1988)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1991)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1994)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1996)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1997)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1998)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1999)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2000)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2001)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2002)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2003)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2004)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2005)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2006)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2007)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2008)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2009)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2010)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2011)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2012)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2014)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2015)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2016)