000 00309nam a2200133Ia 4500
008 220201s2021 xx 000 0 eng d
082 _a6
_bGAL
100 _aGALVIN
245 0 _aOPEReference ATING SYSTEM CONCEPTS/-
250 _a9th
260 _bWILEY
_aNEW DELHI
_c2021
300 _a816p.
942 _2ddc
_01
999 _c2529
_d2529