00297nam a2200121Ia 4500008004100000020002200041041000800063082001200071100001900083245004500102260002000147300000800167230718s2011    xx            000 0 und d  a978-81-312-1132-8  aeng  a617.752  aKHURANA  A. K.  aTHEORY & PRACTICE OF OPTICS & REFRACTION  bElsevier c2011  a445