00291nam a2200109Ia 4500008004100000082001800041100001600059245005900075260002800134300000800162650001100170060110s9999    xx            000 0 und d  a621.36bBAR/E  aBARUAH, G.D  aEssentials of lasers and non linear opticscG.D.Baruah  bPragati Prakashanc2000  a223  a621.36