00313cam a2200121ua 4500041001000000082001800010100001700028245006900045260004300114300001200157504000500169700001700174  aengh  a620.1bDUN/AP  aDuncan, J  .  aApplied mechanics for beginners / cJ Duncan.hTextual Documents  aLondon : bMcMillon & Co Ltd , c1960.  a335 ; .  a1 aMech, M I  .