Universidad Pedagógica Nacional Unidad Ajusco Catálogo de la Biblioteca "Gregorio Torres Quintero"
by Seminar on Social Research and Problems of Rural Development in South-East Asia [1960 : Saigon] | UNESCO.
by UNESCO Seminar on Social Research and Problems of Rural Development in South-East Asia, 1960 : Saigon, Asia | Vu Quoc Thuc, edit | UNESCO.