The Zoologist : a monthly journal of natural history (1869)

The Zoologist : a monthly journal of natural history (1881)

The Zoologist : a monthly journal of natural history (1884)

The Zoologist : a monthly journal of natural history (1891)

The Zoologist : a monthly journal of natural history (1901)

The Zoologist : a monthly journal of natural history (1915)

Zoology : an elementary text-book - MacBride, E. W. (Ernest William), 1866 -1940 (Univ. Press, 1920)

Zoology of Egypt / by John Anderson - Boulenger, George Albert 1858 -1937 (B. Quaritch, 1898)

The zoology of the voyage of the H.M.S. Erebus & Terror, under the command of Captain Sir James Clark Ross, during the years 1839 to 1843. By authority of the Lords Commissioners of the Admiralty - Gray, John Edward 1800 -1875 (E. W. Janson, 1844)

Zoophilacium Gronovianum : exhibens animalia quadrupeda, amphibia, pisces, insecta, vermes, mollusca, testacea, et zoophyta - Gronovius, Laurentius Theodorus, 1730 -1777 (Apud Theodorum Haak et Socium et Samuelem et Johannem Luchtmans, 1763)

Zoophylacium Gronovianum, exhibens animalia quadrupeda, amphibia, pisces, insecta, vermes, molusca, testacea et zoophyta, quae in museo suo adservavit, examini subjecit, systematice disposuit atque descripsit - Boddaert, Pieter, 1730 -1795 (Apud Theodorum Haak et Socium et Samuelem et Johannem Luchtmans, 1763)

Zur Entwicklungsgeschichte des Zahnsystem der Saugethiere, zugleich ein Beitrag zur Stammesgeschichte dieser Thiergruppe - Leche, Wilhelm, 1850 -1927 (E. Nägele, 1895)

Zur Fauna der Krym : ein Beitrag - Rathke, Heinrich, 1793 -1860 (s.n, 1837)

Zur vergleichenden Anatomie des Brustschulterapparates und der Schultermuskeln - Fürbringer, Maximilian, 1846 -1920 (G. Fischer, 1900)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1932)

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)