Universidad Pedagógica Nacional Unidad Ajusco Catálogo de la Biblioteca "Gregorio Torres Quintero"
by Rump, Virginia | Spann, Mary Beth.
by McLaughlin, Peggy | Spann, Mary Beth.
by Buschman, Larry | Spann, Mary Beth.
by Bilbe, Ruth | Spann, Mary Beth | [coaut.] | Kornman, Naomi | [coaut.].
by Taus, Kay | Spann, Mary Beth | [coaut.].