00298cam a2200121ua 4500041001000000082001600010100001800026245005800044250001200102260004500114300001200159504000500171  aengh  a531bLEE/CL  aLeech, J W  .  aClassical mechanics / cJ W Leech.hTextual Documents  a2 / b.  aLondon : bMethuen and Co. Ltd , c1965.  a153 ; .  a