00335nam a2200145Ia 4500008004100000020001700041082000800058082001000066100001700076100001700093245002400110260001500134260003100149260000900180230118s9999||||xx |||||||||||||| ||und||  a81-85618-100  a530  bGHA/O  aajoybghatak  bkthyagarajan 0aoptical electronics  asouth asia  bcambridge university press  c1991