000 00328nam a22001457a 4500
003 OSt
020 _a0070792801
082 _a503.21
_bHIL
100 _aHILL, MC GRAW
245 _aMCGRAW-HILL ENCYCLOPEDIA OF SCIENCE & TECHNOLOGY
250 _aV
260 _aNEW DELHI
_bMC GRAW HILL
_c1982
300 _a868
942 _2ddc
_cD
999 _c80513
_d80513