00470nam a22001817a 450000100060000000300100000600500170001604000140003300800410004702000180008810000280010624500200013425000100015426000350016430000110019965000400021065100380025012270MX-SIABUC20260702204352.0  aMX-SIABUC050608s1986    mx x   j            spa d  a968-419-624-540aScherer García, Julio0 aLos presidentes4 a4 ed.4 aMéxico :bEditorial Grijalbo4 a259 p.  a2.PRESIDENTESz-MÉXICOz-HISTORIA  a1.MÉXICOz-HISTORIAz-1960-1990