00292nam a2200121 45000010006000000050017000069000010000231000021000332450046000547730046001009420007001469990017001539459420260918153953.0 a75808 aFRÍAS, Yolanda aLos precursores de la diplomacia mexicana gC000.113 C749m 1998a, Vol. 1. 299-314 pp. c16 c94594d94594