An introduction to conchology; or, elements of the natural history of molluscous animals / By George Johnston.

London : J. Van Voorst, 1850.

xvi, 614 pages, 1 unnumbered leaf : illustrations ; (8vo)

Copy 1 Note: With papers by J.E. Gray, repr. from Phil. Trans., vols. cxxii, 1833, and cxxv, 1835, on p. 289-95 and 403-56, and 'History of conchology' on p. 492-606.