A 'swatch' is a word that you may not associate with a wildlife identification guide. Originally used in ... collection is the new Marine Bivalve Shells identification swatch.

A 'swatch' is a word that you may not associate with a wildlife identification guide. Originally used in ... collection is the new Marine Bivalve Shells identification swatch.

Analytical tables are given to facilitate identification ... Our Country's Shells and How to Kow Them: a Guide to the British Mollusca. By W. J. Gordon. Illustrated by A. Lambert.