Treatise on marine ecology and paleoecology Joel W. Hedgpeth, editor. - New York: 1957 - 2 volume : illustrations, ports., maps (part fold.) charts, diagrams., profiles, tables. ; 26 cm. - Memoir (Geological Society of America); no.67,v.1-2. . Vol. 2 edited by Harry S. Ladd. Includes bibliographies. v.1. Ecology.--v.2. Paleoecology. Subjects--Topical Terms: Paleoecology.Marine ecology.