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 geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments - Lyell, Charles, Sir, 1797 -1875 (D. Appleton and co, 1868)

Elements of the comparative anatomy of vertebrates - Wiedersheim, Robert, 1848 -1923 (Macmillan, 1886)

Elements of the comparative anatomy of vertebrates - Wiedersheim, Robert, 1848 -1923 (Macmillan, 1897)

Elements of the comparative anatomy of vertebrates - Wiedersheim, Robert, 1848 -1923 (Macmillan and co, 1886)