o ▁and ▁Car men ▁T osc ano . ▁ ▁Career ▁ ▁Comple ting ▁her ▁under grad uate ▁studies , ▁Mill án ▁began ▁teaching ▁Spanish , ▁as ▁well ▁as ▁the ▁literature ▁of ▁Mexico ▁and ▁Spain ▁in ▁the ▁school ▁system ▁of ▁Mexico ▁City . ▁Cont inu ing ▁her ▁education , ▁she ▁earned ▁her ▁master ' s ▁degree ▁in ▁literature , ▁gradu ating ▁Mag na ▁C um ▁Lau de , ▁from ▁U NA M ▁in ▁ 1 9 5 2 , ▁with ▁a ▁th esis ▁entitled ▁ ▁" El ▁p ais aje ▁en ▁la ▁po es ía ▁mex icana " ▁(" The ▁Land s cape ▁of ▁Mexican ▁Po etry "). ▁In ▁ 1 9 5 3 ▁and ▁ 1 9 5 4 , ▁Mill án ▁was ▁selected ▁as ▁a ▁delegate ▁to ▁the ▁I bero - American ▁Liter ature ▁Congress es ▁held ▁in ▁Mexico ▁City ▁and ▁in ▁Ber keley , ▁California . ▁In ▁ 1 9 5 4 , ▁she ▁was ▁h ired ▁as ▁a ▁full ▁professor ▁in ▁the ▁Fac ulty ▁of ▁Philosoph y ▁and ▁Let ters ▁at ▁U NA M , ▁also ▁serving ▁as ▁the ▁department ▁secretary ▁and ▁director ▁of ▁the ▁Center ▁for ▁Liter ary ▁Studies . ▁In ▁addition , ▁she ▁directed ▁the ▁summer ▁school ▁program ▁for ▁the ▁university . ▁ ▁In ▁ 1 9 6 2 , ▁a ▁de cade ▁after ▁her ▁master ' s ▁work , ▁Mill án ▁completed ▁her ▁Ph D ▁in ▁literature . ▁Her ▁doctor al ▁th esis , ▁" Liter atura ▁Mex icana " ▁(" M ex ican ▁Liter ature "),