Forms of animal life - Rolleston, George, 1829 -1881 (Clarendon Press, 1870)

Forms of animal life; being outlines of zoological classification based upon anatomical investigation and illustrated by descriptions of specimens and of figures - Rolleston, George, 1829 -1881 (Clarendon press, 1870)

Forms of animal life : a manual of comparative anatomy : with descriptions of selected types - Rolleston, George, 1829 -1881 (Clarendon Press, 1888)

Forms of animal life; a manual of comparative anatomy, with descriptions of selected types - Rolleston, George, 1829 -1881 (Clarendon Press, 1888)

Forschungsberichte aus der Biologischen Station zu Plön - Plön (Germany). Biologische Station. (Nägele, 1905)

Die Fortschritte der Botanik (Mayer, 1879)

Fresh-water biology - Ward, Henry Baldwin, 1865 -1945 (John Wiley & sons, inc.; [etc.,etc.], 1918)

Fresh-water biology - Ward, Henry Baldwin, 1865 -1945 (John Wiley & sons, inc.; [etc., etc.], 1918)

Fresh water flora and fauna of Central Park. Preliminary paper with bibliography - Gratacap, L. P. (Louis Pope), 1851 -1917 (Macgowan & Slipper, Printers, 1884)

Fresh-water rhizopods of North America - Leidy, Joseph, 1823 -1891 (Government Printing Office, 1879)

Fresh-water rhizopods of North America - Leidy, Joseph, 1823 -1891 (G.P.O, 1879)

Fresh water sponges; a monograph - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences, 1887)

Freshwater sponges, hydroids & Polyzoa - Annandale, Nelson, 1876 -1924 (Taylor and Francis, 1911)