000 00285nam a2200121Ia 4500
008 220601s1986 xx 000 0 eng d
100 _aMARTEL,LEON
245 0 _aMASTERING CHANGE
250 _a1ST Ed.
260 _c1986
_aNew Delhi
_bMENTOR BOOK
300 _a342p.
942 _2ddc
_cBTECH
999 _c1780
_d1780