00586cam a2200241 a 4500 ocm03893718 780419s1979 xxu 001 0 eng d 78008417 9780195024593 9780195024586 78008417 und xxu 375/.001 @ Egan, Kieran. Educational development / Kieran Egan. New York : Oxford University Press, 1979. 174 p. ; 22 cm. Includes index. Curriculum change. 982 982