IUCN bulletin.
International Union for Conservation of Nature and Natural Resources.
Morges, Switzerland : International Union for Conservation of Nature and Natural Resources,
1961-1995.
Energy information abstracts
Environment abstracts
Life sciences collection
No. 1-20, Aug. 1961-July/Sept. 1966, constitute new ser. v. 1.
Nature conservation
Conservation of natural resources
Bulletin (International Union for Conservation of Nature and Natural Resources)
World conservation