Description: A key to the major groups of British freshwater invertebrates/

Main Author:	Croft, P. S.
Format:	Book
Language:	English
Published:	χ.τ.: Field Studies Council, 1986
Subjects:	Ζωολογία > Ασπόνδυλα Ζωολογία > Ασπόνδυλα > Βόρεια Αμερική