Les systèmes statistiques nationaux de collecte de données sur l'activité scientifique et technique dans les pays d'Amérique Latine
Recommendation concerning the international standardization of statistics relating to book production and periodicals adopted by the General Conference at its thirteenth session, Paris, 19 November 1964
Recommendation concerning the international standardization of statistics on radio and television : adopted by General Conference at its nineteenth session, Nairobi, 22 November 1976