00301nam a2200133Ia 4500008004100000041000800041082001700049100001700066245004200083260000900125300000800134365000800142700001700150230719s9999    xx            000 0 und d  aeng  a621.815bJOH  aJohnson R.C.  aOptimum Design of Mechanical Elements  c1961  a535  cRs.  aJohnson R.C.