00338cam a2200133ua 4500041001000000082001600010100002400026245006200050260004900112300001200161504000500173942000700178999001900185  aengh  a824bEIN/ES  aEinstein, Albert  .  aEssays in science / cAlbert Einstein.hTextual Documents  aNew York : bPhilosophical Library , c1934.  a114 ; .  a  cBK  c333841d333841