00256nam a2200097Ia 4500100002600000654002700026245004400053260003200097082001700129546001200146  aRiley/ W.F./ Zachary   aMechanics of materials  aIntroduction to Mechanics  of Materials  bJohn  WileyaNew Yorkc1989  a620.112bPAN  aENGLISH