000 00234nam a2200109Ia 4500
020 _a9788185618104
082 _a621.382
100 _aGHATAK, AJOY
245 _aOPTICAL ELETRONICS
260 _aNEW DELHI
_b CAMBRIDGE
_c2011
942 _cBK
999 _c3183
_d3183