000 00268nam a2200121Ia 4500
082 _a001.3 MEN/H
100 _aMenon RVG
245 _aHistory of Science and Technology
250 _a4
260 _c1991
_bBhagya Book House
_aTrivandrum
300 _a246
942 _cBK
999 _c23455
_d23455