00274nam a2200109Ia 4500008004100000082001500041100001200056245003300068250001200101260004300113300000800156240913s9999||||xx |||||||||||||| ||und||  a535  LAU/L  aBB Laud 0aLasers and non-linear optics  a3rd Ed.  bNew Age InternationalaNew Delhic2011  a289