Publicado por UNESCO, Paris, 1968
Librería: McBlain Books, ABAA, Hamden, CT, Estados Unidos de America
Paperback. Condición: Very Good. illustrations, 37p. Softcover in original wrapper. 21cm. Contains the speeches at the ceremony by Sarwat [Tharwat] Okasha, Paulo E. de Berredo Carneiro and Rene Maheu.