Text-book of the embryology of invertebrates - Mark, E. L. (Edward Laurens), 1847 -1946 (S. Sonneschein and co., ltd, 1899)

Text-book of the embryology of invertebrates - Mark, E. L. (Edward Laurens), 1847 -1946 (S. Sonneschein and co., ltd, 1900)

A text-book of zoogeography - Beddard, Frank E. (Frank Evers), 1858 -1925 (University press, 1895)

A text-book of zoogeography - Beddard, Frank E. (Frank Evers), 1858 -1925 (University Press, 1895)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1921)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1897)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and Co., Limited, 1910)

Text book of zoology - Boas, J. E. V. (Johan Erik Vesti), 1855 -1935 (Sampson Low, Marston, 1896)

Text-book of zoology - Schmeil, O. (Otto), 1860 -1943 (A. and C. Black, 1901)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillian and co., limited, 1910)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and co., limited, 1897)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan and co., limited, 1910)