00249nam a2200109Ia 4500008004100000041000800041082002200049100001300071245003800084260000900122300000800131211209s1962    xx            000 0 und d  aeng  a620.1 N62 CLE/WIL  aCLEMENTS  aANALYTICAL AND APPLIED MECHANICS   c1962  a462