000 00272nam a2200109Ia 4500
008 190703s9999 xx 000 0 und d
082 _a620.09 M5474
100 _aMENON,R.V.G
245 0 _aHISTORY OF SCIENCE AND TECHNOLOGY
260 _aTrivandrum
_bBHAGYA
942 _cBB
_2DDC
999 _c5378
_d5378