00270nam a2200121Ia 4500008004100000100001700041245002100058260002500079300000800104650001200112942000700124999001700131190216s9999||||xx |||||||||||||| ||und||  aNaftaly Menn 0aPractical Optics  bElsevier Science Pub  a321  aPhysics  cBK  c34402d34402