A framework for the classification of terrestrial and marine protected areas : objectives, criteria and categories for protected areas : a report based on the work of CNPPA's Task Force on Classification /
Eidsvik, Harold K.
IUCN Commission on National Parks and Protected Areas.Task Force on Classification.
Gland : IUCN,
[1991]
Approved by the CCPPA meeting in Perth, Australia, November 1990.
Natural areas