00562nam a2200181Ia 4500 IA_2387,06/05/2003,26/07/2011,0000001968 1976 mx A 0000000000spa00," Desarrollo 220117sollo xx 000 0 und d 181734 968-16-0627-2 658.4 B47Y Bertalantty 152723 Mexico : Fondo de Cultura Economica, ollo 311 p. Trad. de General System Theory ollo 181734 181734