Freshwater life : Britain and Northern Europe - Greenhalgh, Malcolm; Ovenden, Denys (256 p. : col. ill, 2007)
Includes bibliographical references (p. 247-248) and index.
Keywords: Freshwater animals -- Europe, Northern -- Identification; Freshwater animals -- Great Britain -- Identification; Freshwater plants -- Europe, Northern -- Identification; Freshwater plants -- Great Britain -- Identification