And conclusions of the workshop on the World Heritage Convention held during the IV World Congress on National Parks and Protected Areas, Caracas, Venezuela, February 1992 / Hemanta Mishra and N. Ishwaran -- From strength to strength : World Heritage in its 20th year / Jim Thorsell -- World Heritage at risk / James R. Paine -- The World Heritage Convention and protected landscapes / Michael Beresford and P.H.C. Lucas -- Wood Buffalo World Heritage Site : threats and possible solutions / Kevin McNamee -- Kluane and Wrangell-St Elias national parks : joint management of North America's largest wilderness / Michael Fay -- Charting a course for a greater Yellowstone tomorrow / Dennis Click -- Colombian-Panamanian border national parks in Darién / Dilver Octavio Pintor Peralta -- Public participation in the management of Huascarán World Heritage Site / Miriam Torres Angeles -- Scientific research in Bialowieza World Heritage Site / Czeslaw Okolow -- Buffer zone management in Sinharaja World Heritage Forest / H.M. Bandaratillake -- Environmental impacts of back-country tourism on three sides of Everest / Alton C. Byers and Kamal Banskota -- Sociocultural impacts of mountain tourism on Nepal's Sagarmatha (Everest) World Heritage Site : implications for sustainable tourism / David W. Robinson -- Manas : World Heritage in danger? / Sanjoy Deb Roy -- The effects of war on World Heritage sites and protected areas in Ethiopia / Tadesse Gebre-Michael, Tesfaye Hundessa and Jesse C. Hillman -- The International Foundation of the Banc d'Arguin / Luc Hoffman and Pierre Campredon -- Ngorongoro : striking a balance between conservation and development / Scott L. Perkin and Paul J. Mshanga -- Monitoring the environmental impacts of tourism on the Great Barrier Reef World Heritage Site / Simon Woodley -- Tourism development and Te Wahipounamu / Bruce Watson -- Application of the World Heritage Convention to Antarctica and the islands of the Southern Ocean / Paul Dingwall.