00249nam a2200109Ia 4500008004100000041000800041082001900049100001800068245003600086260000900122300000800131211209s1957    xx            000 0 und d  aeng  a620.11 N57 PAN  aPANNELL J P M  aMATERIALS OF CIVIL ENGINEERING   c1957  a248