hacia una metodología de nodos articuladores Leal Martínez, Gregorio editor. López Ramírez, Mario Edgar editor. text bibliography mx 2023 1a edición. monographic spa 1 online resource : illustrations. Gregorio Leal Martínez, Mario Edgar López Ramírez, coordinadores. Includes bibliographical references. Social problems HN28 ebook 9786078910007 9786078768998 https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/127768/ https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/127768/ DGITA 230812 DIGITESO0147 eng