00257nam a2200109Ia 4500020001800000082001800018100002600036245002300062250001300085260003800098650001100136  a9780521138475  a621.366 SIL/L  aSilfvast, William T.  0aLaser Fundamentals  a2ND ED.   bCambridge University PressaDelhi  aLasers