Classification of educational systems in OECD member countries : Belgium, Denmark, United States - París [Francia] : Organisation for Economic Co-operation and Development, 1972 - 79 p. - Classification of Educational Systems . ISBN: 92-64-11122-0 Subjects--Topical Terms: EDUCACIÓN--VALORACIÓN--BÉLGICAEDUCACIÓN--VALORACIÓN--DINAMARCAEDUCACIÓN--VALORACIÓN--E.U.A. Dewey Class. No.: OCDE 370.9 C614c BEL 1972