Purvis, June. Understanding texts / prepared by June Purvis for the course team. - Milton Keynes : The Open University Press, 1984. - 54 pages : illustrations, facsims, ports ; 30 cm. - The Open University : conflict and change in education unit 15 . Bibliography: page 52-53. ISBN: 0335132235 Subjects--Topical Terms: Educational sociology.History--Text--books.Sociology--Text--books.