How schools use their time : time allotment practice in 444 cities, including a study of trends from 1826 to 1926 /
Mann, Carleton Hunter,1886-
Columbia University.Teachers College.Bureau of Publications.
New York City : Bureau of Publications, Teachers College, Columbia University,
1928.
Published also as thesis (PH. D.) Columbia university, 1929.
Bibliography: p. 153-154.
Education
Educational surveys
School management and organization