A conchological manual. Third Edition - Sowerby, G. B. (George Brettingham), 1812 -1884 (Henry G. Bohn, 1846)

A conchological manual. Second Edition - Sowerby, G. B. (George Brettingham), 1812 -1884 (Henry G. Bohn, 1842)

A conchological manual - Sowerby, G. B. (George Brettingham), 1812 -1884 (Henry G. Bohn, 1846)

A conchological manual - Sowerby, G. B. (George Brettingham), 1812 -1884 (H. G. Bohn, 1852)

A conchological manual - Sowerby, G. B. (George Brettingham), 1812 -1884 (H.G. Bohn, 1852)

A conchological manual - Sowerby, G. B. (George Brettingham), 1812 -1884 (Henry G. Bohn ... and Sowerby, 1842)

A conchological manual - Sowerby, G. B. (George Brettingham), 1812 -1884 (G.B. Sowerby, 1839)