joint editors, Robert King Hall, J.A. Lauwerys ; prepared under the auspices of the University of London Institute of Education and Teachers College, Columbia University
joint editors, Robert King Hall, J.A. Lauwerys ; prepared under the auspices of the University of London Institute of Education and Teachers College, Columbia University
World Book Co.[1955]The year book of education
1955
joint editors, Robert King Hall, N. Hans, J.A. Lauwerys ; prepared under the auspices of the University of London Institute of Education and Teachers College, Columbia University
World Book Co.[1954]The year book of education
1954
