The ecology and life history of the common frog (Rana temporaria temporaria) - Savage, Ronald Maxwell. (Hafner Pub. Co, 1962)

Ecology of the Svjatoj Nos wetlands, Lake Baikal : results of the Svjatoj Nos 1991 expedition - Mlâikovskây, Jiérâi (Ninox Press, 1992)

Ecuador. Cabeceras Cofanes-Chingual - Field Museum of Natural History. (Field Museum, Environment, Culture, and Conservation, 2009)

Ecuadorian lizards of the genus Stenocercus (Squamata: Tropiduridae) - Torres-Carvajal, Omar (Natural History Museum, University of Kansas, 2000)

Eerste ontwikkelingsstadiën van Megalobatrachus maximus Schlegel - Bussy, I. J. de (Izaak Jan), 1907 -1920 (J.H. De Bussy, 1904)

Effects of highways on wildlife and fish with special reference to Montana a ProCite literature collection - Irby, Lynn R. (Fish and Wildlife Management Program, Montana State University, 2001)

Einführung in die paläontologie - Steinmann, G. (Gustav), 1856 -1929 (W. Engelmann, 1903)

Einführung in die Kenntnis der Insekten - Kolbe, H. J. (Hermann Julius), 1855 -1939 (Dümmler, 1889)

Einführung in die vergleichende Anatomie der Wirbeltiere, für Studierende - Wiedersheim, Robert, 1848 -1923 (Fischer, 1907)

Elementarcurs der zootomie in fünfzehn vorlesungen - Hatschek, Berthold, 1854 - (G. Fischer, 1896)

An elementary course of practical zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and Co., Limited, 1900)

An elementary course of practical zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1908)

An elementary course of practical zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1920)

An elementary course of practical zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and co., ltd, 1922)

An elementary text-book of biology, comprising vegetable and animal morphology and physiology - Ainsworth-Davis, J. R. (James Richard), 1861 -1934 (Charles Griffin, 1893)

Elementary text-book of zoology - Claus, Carl, 1835 -1899 (Macmillan, 1890)

Elementary text-book of zoology - Parsons, John Herbert, Sir, 1868 -1957 (E. & S. Livingstone, 1901)

Elementary text-book of zoology - Masterman, Arthur T (E. & S. Livingstone, 1902)

Elementary text-book of zoology - Claus, Carl, 1835 -1899 (W. Swan Sonnenschein, 1885)

Elementary text-book of zoology - Claus, Carl, 1835 -1899 (W. S. Sonnenschein, 1884)

Elementary text-book of zoology : special part : mollusca to man - Claus, Carl, 1835 -1899 (Swan Sonnenschein, 1897)

Elementary text-book of zoology - Claus, Carl, 1835 -1899 (Macmillan, 1884)

Elementary textbook of economic zoology and entomology - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1915)

Elementary zoology - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1902)

Elementary zoology - Beddard, Frank E. (Frank Evers), 1858 -1925 (Longmans, Green, and Co, 1898)

Elemente der palaeontologie : (Palaeozoologie) / von Rudolf Hoernes - Hoernes, Rudolf, 1850 -1912 (1884)

Elemente der paläontologie bearbeitet - Döderlein, Ludwig, 1855 -1936 (Engelmann, 1890)

The elements of animal biology - Holmes, Samuel J. (Samuel Jackson), 1868 -1964 (P. Blakiston's son & co, 1919)

Elements of biology; a practical text-book correlating botany, zoology, and human physiology - Hunter, George W. (George William), 1873 -1948 (American book company, 1907)

Elements of Comparative Anatomy - Bell, F. J. (Francis Jeffrey), 1855 -1924 (1878)

Elements of comparative anatomy - Bell, F. J. (Francis Jeffrey), 1855 -1924 (Macmillan, 1878)

Elements of comparative anatomy - Bell, F. J. (Francis Jeffrey), 1855 -1924 (Macmillan and Co, 1878)

Elements of comparative zoology - Kingsley, J. S. (John Sterling), 1854 -1929 (H. Holt and Company, 1904)

Elements of comparative zoology - Kingsley, J. S. (John Sterling), 1854 -1929 (H. Holt and Company, 1897)

The elements of experimental embryology - Huxley, Julian, 1887 -1975 ([Hafner Pub. Co.], 1963)