The open sea : its natural history : part 1. The world of plankton / by Sir Alister Hardy with watercolour drawings by the author ; photographs in black and white by Douglas Wilson and others, and line drawings and maps. Hardy, Alister, Sir. Marine biology. Fishes. Plankton. QH91 .H292 591.92 HAO Includes bibliographical references and index. Boston : Houghton Miffln, 1965. 1965. 1965 Text 2 v., [48] leaves of plates : eng The New naturalist : a survey of British natural history New naturalist.