"Report on the 1978 secondary survey from the National Foundation for Educational Research in England and Wales to the Department of Education and Science, Department of Education for Northern Ireland and the Welsh Officeā€¯.
Includes index.
At head of title: Assessment of Performance Unit.
Mathematical development. Secondary survey report no.1. ISBN 0112705162. Published by H.M.S.O. in 1980. Publication and catalogue information, links to buy online and reader comments.