00265nam a2200109Ia 4500008004100000082001500041100002400056245002900080250000900109260002300118650001400141220204s9999    xx            000 0 und d  a665.6bWAD  aWaddams, A Lawrence 0aChemicals from petroleum  aEd.2  aLondonbELBSc1968  aPetroleum