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020 _a706986423
041 _aen
082 _a28.7
100 _aKUMAR, Krishan
_95380
245 0 _aReference Service
250 _a5th ed.
260 _aNew Delhi.
_bVikas Publishing House pvt. Ltd.
_c2000
300 _ax, 447p.
650 _aInformation Service
_95381
650 _aLibrary
_95382
942 _cPR
_2ddc