000 00297nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aNil
245 0 _a"Mc Graw Hill Encyclopedia of Science and Technology, Vol-3"
260 _bMc Graw Hill
260 _c1971
365 _b0.00
942 _cBK
999 _c135907
_d135907