000			00568pam a2200169a 44500
008			160408b1983 xxu||||| |||| 00| 0 eng d
082			_a512.7 _bSp48g
100			_aSpisani, Franco
245	1		_aGENERAL THEORY OF DIRECTED NUMBERS _cWITH INTRODUCTION OF MULTIPLYING AND DIVIDING NUMBERS
260			_aBologna _bInternational Logic Review _c1983
300			_av.
500			_aText In English And Italian
500			_aAt Heat Of Title : Centro Superiore De Logica E Scienze Comperate
650			_aNumbers, Theory Of
964			_gCIRC
997			_aA82319 v. 1 C
999			_c293271 _d293271