Zoology : a systematic account of the general structure, habits, instincts, and uses of the principal families of the animal kingdom - Carpenter, William Benjamin, 1813 -1885 (Wm. S. Orr, 1848)

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

Zooplankton data and sample archive database design for the Dorset Research Centre : report - Ontario. Ministry of the Environment. (Queen's Printer for Ontario, 1993)

Zoosystema - Muséum national d'histoire naturelle (France) (Ed. scientifiques du Muséum, 1998)

Zur Rotatorienfauma Grönlands - Bergendal, David, 1855 -1908 (Berlingska Bogtr.- och Stilgjuteri-Aktiebolaget, 1892)