World heritage twenty years later
Subtitle: based on papers presented at the World Heritage and other workshops held during the IVth World Congress on National Parks and Protected Areas, Caracas, Venezuela, February 1992
By: compiled by Jim Thorsell with the editorial assistance of Jacqueline Sawyer.
Contributors: Thorsell, J. W.; Sawyer, Jacqueline.; International Union for Conservation of Nature and Natural Resources.; World Heritage Committee.; World Congress on National Parks and Protected Area (4th : 1992 : Caracas, Venezuela)
Publisher: IUCN, the World Conservation Union, in collaboration with UNESCO's World Heritage Committee
Published: 1992
Place of publication: Gland, Switzerland
Language: eng
Number of pages: 191
Subjects: Natural areas -- Congresses.; National parks and reserves -- Congresses.
Other titles: World heritage 20 years later