00386nam a2200145 a 450000500170000002000140001708200130003110000350004410000180007924500590009726000390015630000220019563000080021763000150022520251202164133.0  a004291017  a128bDUR  aDurckheim, Karlfried, Graf von  aUnwin, George  aOur two-fold originbas promise experience and mission  aLondon GeorgebAllen & Unwinc1983  a174p.b23 cm.cHB  aMan  aPhilosophy