00241nam a2200097Ia 4500008004100000082002300041100001300064245003200077260002700109300000700136140113s9999    xx            000 0 und d  a539.371(047.3)  L1  aI.A.E.A.  aNuclear Science Teaching II  a1971bI.A.E.A.cVienna  a27