Project Aqua a source book of inland waters proposed for conservation
Luther, Hans.
Rzóska, Julian.
Societas Internationalis Limnologiae.
London International Biological Programme Oxford Blackwell Scientific Publications Ltd
1971
'Sponsored by International Biological Programme (IBP), Societas Internationalis Limnologiae... International Union for the Conservation of Nature and Natural Resources (IUCN)'
Includes bibliographies and index
Lakes.
Rivers.