00305nam a2200133Ia 450000500170000008000180001710000170003524500330005226000240008530000140010958300190012394200120014299900170015420260716043058.0  a12.06.01 S617  aSinger, Hans  aTechnologies for basic needs  bILOaGenevaCHc1977  ax, 158 p.  c3/7/00kM2LMGR  cMmS617  c39905d39905