00309nam a2200133Ia 4500008004100000020000700041040003000048082001500078100001600093245001100109260003200120300001100152650001200163190302s9999||||xx |||||||||||||| ||und||  c14  aKharagpur College Library  a535.3bGHA  aAjoy Ghatak  aOptics  bKolkata BookaKolkatac1987  a314 p.  aPhysics