The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1995)

Wingspan : newsletter for members of the Raptor Research Foundation - Raptor Research; Technical Assistance Center (U.S.) (Raptor Research & Technical Assistance Center, 2013)

World Atlas of Biodiversity: earth's living resources in the 21st century - Groombridge, Brian (UNEP-WCMC, 2002)

World Checklist of Threatened Amphibians and Reptiles (1993)

World Checklists of Threatened Amphibians and Reptiles (1983)

Wörterbuch der biologie. Von dr. Heinrich Schmidt - Schmidt, Heinrich, 1874 -1935 (A. Kröner, 1912)

Wörterbücher der Naturgeschichte : in der deutschen, holländischen, dänischen, schwedischen, englischen, französischen, italienischen, Spanischen und Portugisischen Sprache - Nemnich, Philipp Andreas, 1764 -1822 (Adam Friedrich Böhme, 1798)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 2006)

Zoognosia tabulis synopticis illustrata : in usum praelectionum Academiae imperialis medico-chirugicae mosquensis edita - Fischer von Waldheim, Gotthelf, 1771 -1853 (Typis Nicolai S. Vsevolozsky, 1813)

Zoographia Rosso-Asiatica : sistens omnium animalium in extenso Imperio Rossico, et adjacentibus maribus observatorum recensionem, domicilia, mores et descriptiones, anatomen atque icones plurimorum - Pallas, Peter Simon, 1741 -1811 (In officina Caes. Acadamiae Scientiarum Impress. MDCCCXI, 1831)

Zoología - Claus, Carl, 1835 -1899 (Imprenta y litografía de F. Nacente, 1890)

Zoologia specialis quam expositus animalibus tum vivis : tum fossilibus potissimum Rossiae in universum et Poloniae in species - Eichwald, Carl Eduard von, 1795 -1876 (J. Zawadzki, 1829)

Zoologia specialis quam expositus animalibus tum vivis : tum fossilibus potissimum Rossiae in universum et Poloniae in species - Eichwald, Carl Eduard von, 1795 -1876 (J. Zawadzki, 1831)

Zoologiae Danicae prodromus : seu Animalium Daniae et Norvegiae indigenarum ; characteres, nomina, et synonyma imprimis popularium - Müller, Otto Frederik, 1730 -1784 (typis Hallageriis, 1776)

Zoologiae Danicae prodromus, seu, Animalium Daniae et Norvegiae indigenarum characteres, nomina, et synonyma imprimis popularium - Müller, Otto Frederik, 1730 -1784 (Typis Hallageriis, 1776)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1923)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1925)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1951)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1952)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1953)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1955)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1960)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1966)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1970)

The Zoological journal - Sowerby, James de Carle, 1787 -1871 (W. Phillips, 1825)

Zoological names. A list of phyla, classes, and orders, prepared for section F, American Association for the Advancement of Science - American Association for the Advancement of Science. (Duke University Press, 1949)

Zoölogical science - Redfield, A. M. (Anna Maria), 1800 -1888 (E. B. & E. C. Kellogg, 1865)

Zoölogical science, or, Nature in living forms ... : adapted to elucidate the chart of the animal kingdom - Redfield, A. M. (Anna Maria), 1800 -1888 (E.B. & E.C. Kellogg, 1858)

Zoologischer Anzeiger - Deutsche Zoologische Gesellschaft. (VEB Gustav Fischer Verlag, 1879)

The Zoologist : a monthly journal of natural history (1843)

Zoology; a text-book for universities, colleges and normal schools - Galloway, Thomas Walton, 1866 -1929 (P. Blakiston's son & co, 1922)

Zoology - Goodnight, Clarence J. (Clarence James), 1914 -1987 (C. V. Mosby Co, 1954)

Zoosystematics and evolution (Pensoft, 2014)

Zoosystematics and evolution (Pensoft, 2015)

Zoosystematics and evolution (Pensoft, 2016)

Zoosystematics and evolution (Pensoft, 2018)

Zoosystematics and evolution (Pensoft, 2019)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1934)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1936)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1938)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1940)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1942)