000			00328nam a2200133Ia 4500
008			240913s9999||||xx |||||||||||||| ||und||
082			_aGS 303.34 HAJ/P
100			_aT N Hajela
245		0	_aPrinciples problems and practice of co operation
250			_aNULL
260			_bNULL _aNULL _c1992
300			_a702
942			_cBKS
999			_c1057 _d1057