000 00322nam a2200121Ia 4500
008 190719s9999 xx 000 0 und d
082 _a620.09 M5474
100 _aMENON,R.V.G
245 0 _aHISTORY OF SCIENCE AND TECHNOLOGY
260 _aTrivandrum
_bCOLLEGE BOOK HOUSE
_c1978
300 _a22X14 pp. 365
942 _cBK
_2DDC
999 _c46319
_d46319