A key to the major groups of British freshwater invertebrates

This identification guide is designed to help non-specialists identify the invertebrates found in pools, lakes, streams and rivers. An identification key is included to enable users to identify macroscopic British freshwater animals to their major group and, where possible, to family, genus and species. There are 579 pages, with room for notes at the back. This paperback book is extensively illustrated in black and white throughout.