▁and ▁Esc uela ▁Lib re ▁de ▁D ere cho . ▁He ▁also ▁began ▁working ▁in ▁the ▁civil ▁service ▁for ▁the ▁under secret ary ▁of ▁labor ; ▁in ▁ 1 9 7 7 , ▁he ▁began ▁a ▁brief ▁st int ▁as ▁the ▁coordin ator ▁of ▁publications ▁and ▁public ▁relations ▁for ▁the ▁Department ▁of ▁the ▁Federal ▁District . ▁ ▁Between ▁ 1 9 8 0 ▁and ▁ 1 9 8 3 , ▁he ▁taught ▁at ▁the ▁U NA M ; ▁during ▁this ▁time , ▁from ▁ 1 9 8 1 ▁to ▁ 1 9 8 2 , ▁he ▁served ▁as ▁the ▁director ▁general ▁of ▁the ▁Historic ▁Center ▁of ▁Mexico ▁City . ▁In ▁ 1 9 8 5 , ▁he ▁became ▁the ▁private ▁secretary ▁to ▁the ▁under secret ary ▁of ▁fish eries ▁in ▁the ▁Secret ariat ▁of ▁Fish eries ▁( SE P ES CA ), ▁following ▁it ▁up ▁three ▁years ▁later ▁with ▁a ▁post ▁as ▁deput y ▁coordin ator ▁general ▁of ▁the ▁National ▁N ut r ition ▁Commission ▁( CON AL ). ▁ ▁In ▁ 1 9 9 0 , ▁M ald on ado ▁began ▁teaching ▁administrative ▁law , ▁which ▁he ▁would ▁do ▁throughout ▁the ▁ 1 9 9 0 s ; ▁he ▁also ▁briefly ▁taught ▁at ▁the ▁Co leg io ▁de ▁la ▁Def ensa ▁Nacional ▁between ▁ 1 9 9 1 ▁and ▁ 1 9 9 3 . ▁After ▁two ▁years ▁in ▁the ▁Secret ariat ▁of ▁Public ▁Education , ▁M ald on ado ▁went ▁to ▁the ▁P RI ▁to ▁serve ▁as ▁the ▁deput y ▁coordin