000 00376nam a2200157Ia 4500
020 _a9799695110156
040 _cPK-LaCSN
082 _a500
_bMAS
100 _a"Mashal,Publications"
245 0 _aMastering science:
_bbook 1
260 _c2013
_bMashal Publishing
_aLahore
300 _a80
942 _cTR
999 _c835745
_d835722