Zoology, a textbook for college and university students - Chidester, Floyd Earle, 1884 -1947 (D. Van Nostrand, 1932)

Zöology; a textbook for colleges and universities - Cockerell, Theodore D. A. (Theodore Dru Alison), 1866 -1948 (World book company, 1920)

Zoology : a textbook for universities, colleges and normal schools / Thomas Walton Galloway - Galloway, Thomas Walton, 1866 -1929 (Blakiston, 1915)

Zoosystema - Muséum national d'histoire naturelle (France) (Ed. scientifiques du Muséum, 1997)

Zoosystematics and evolution (Pensoft, 2014)

Zoosystematics and evolution (Pensoft, 2015)

Zoosystematics and evolution (Pensoft, 2016)

Zoosystematics and evolution (Pensoft, 2017)

Zoosystematics and evolution (Pensoft, 2018)

Zoosystematics and evolution (Pensoft, 2019)

Zoosystematics and evolution (Pensoft, 2020)

Zoosystematics and evolution (Pensoft, 2021)

Zoosystematics and evolution (Pensoft, 2022)

Zoosystematics and evolution (Pensoft, 2023)

Zoosystematics and evolution (Pensoft, 2024)

Zur systematik und verbreitung palaearctischer Collembola - Schött, Harald Gerhard. (P.A. Norstedt & söner, 1893)

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