000 00271nam a2200109Ia 4500
008 220201s2007 xx 000 0 eng d
100 _aMC-Grow-Hill
245 0 _aEncyclopedia of Science & Tech.
260 _aNew Delhi
_bMc-Grow-Hill
_c2007
300 _a721
942 _2ddc
999 _c64981
_d64981