Fluctuations of glaciers, 1995-2000 (Vol. VIII) : a contribution to the Global Terrestrial Network for Glaciers (GTN-G) as part of the Global Terrestrial/Climate Observing System (GTOS/GCOS), the Division of Early Warning and Assessment and the Global Environment Outlook (DEWA and GEO, UNEP), and the International Hydrological Programme (IHP, UNESCO)