Politics and script : aspects of authority and freedom in the development of Graeco-Latin script from the sixth century B.C. to the twentieth century A.D. /
: Lectures delivered in 1957, reworked and elaborated for publication : [5], 361 pages : illustrations, Facsimiles ; 28 cm. : Bibligraphy : pages 341-345. : 0198181469
Unesco, IBE education thesaurus : a list of terms for indexing and retrieving documents and data in the field of education--with French and Spanish equivalents.
: Revision edition of : Terminology, Unseco, IBE educatiion thesaurus/ prepared by the International Bureau of Education. 1978. : xvi, 345 pages : illustrations ; 21 cm. : Bibliography : page xvi.