00467nam a2200121Ia 450000500170000010000190001724500990003626000090013552001590014458300190030394200060032299900170032820260716043348.0  aMALLEY, Jurgen  aMilestones on the road to sustainability : appropriate technology and sustainable development.  c1997  aHighlights the steps which are needed to achieve the combined social, economic and ecological changes that are required to ensure sustainable development.  c3/7/00kM2LMGR  cA  c45655d45655