Luther, Hans, 1915- Project aqua a source book of inland waters proposed for conservation compiled by H. Luther, J. Rzoska - London International Biological Programme 1971 - xiv, 239 p. : illus. ; 22 cm. - IUCN occasional paper ; no.2. . Includes bibliographies. ISBN: 0632087307 LCCN: 72-182322 Subjects--Topical Terms: Water conservationLakes--Registers