Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1894)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1898)

Proceedings of the Royal Society of London - Royal Society (Great Britain) (The Society, 1903)

Proceedings of the Royal Zoological Society of New South Wales - Royal Zoological Society of New South Wales. (The Society, 1960)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1916)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1922)

Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1923)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1909)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1910)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1920)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1921)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1929)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1957)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1851)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1869)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1870)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1879)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1880)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1881)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1884)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1885)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1886)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1888)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1889)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1890)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1891)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1898)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1900)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1901)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1903)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1904)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1905)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1833)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1906)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1907)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1909)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1911)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1912)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1913)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1914)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1917)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1918)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1921)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1922)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1923)

The process of evolution - Ehrlich, Paul R. (McGraw-Hill, 1963)

A protorothyridid captorhinomorph reptile from the Lower Permian of Oklahoma - Reisz, Robert R. (Royal Ontario Museum, 1980)

Publication. Field Columbian Museum. Geological series - Field Museum of Natural History. (The Museum, 1903)

Quain's Elements of anatomy - Sharpey-Schäfer, E. A. Sir, (Edward Albert),‏ ‎ 1850 -1935 (Longmans, Green, 1890)

Quain's Elements of anatomy - Sharpey-Schäfer, E. A. Sir, (Edward Albert),‏ ‎ 1850 -1935 (Longmans, Green, and Co, 1891)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1886)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1887)