000			00310nam a2200133Ia 4500
082			_a826 _bBIC
100			_aBiswas, P K _9180813
245			_aCommercial letters _cP K Biswas
260			_aCalcutta: _bRatan Book Agency,
300			_b240p.
546			_aeng
650			_aEnglish letters _9131528
942			_cBK
999			_c79153 _d79153