'... a complement to the earlier OECD "handbook" for educational planners "Methods and Statistical Needs for Educational Planning" which was published in 1967 ...' - Introduction.
Classification of educational systems in OECD member countries. Australia, Luxembourg, Switzerland by Organisation for Economic Co-operation and Development. ISBN 926411386x. Published by O.E.C.D. in 1975. Publication and catalogue information, links to buy online and reader comments.