578.76
C624     Clegg, John

               The Freshwater of the British Isles: a guide to the plants and invertebrates of ponds, lakes, streams and rivers, with an additional chapter on the vertebrates / John Clegg . - 2nd ed. . - London : Frederick Warne,1959 . - 352p.; fig. (some col.)

               Includes index

Central Inland Fisheries Research Institute

CIFRI