ID:DA08287191
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by Leonard V. Koos
AMS Press 1970
Available at 2 libraries
Leonard V. Koos
Greenwood 1969
Harper c1955 Exploration series in education
Available at 8 libraries
Leonard V. Koos ... [et. al.]
American Book Co. c1940
Available at 23 libraries
by Leonard V. Koos and staff
G.P.O. 1934 Bulletin / Department of the Interior, Bureau of Education 1932, no. 17 . National survey of secondary education ; Monograph ; no. 1
Available at 1 libraries
by Leonard V. Koos and Grayson N. Kefauver
Macmillan 1932
Available at 12 libraries
Univ. of Chicago Press 1931
Available at 10 libraries
by Leonard V. Koos ; with an introduction by Henry Suzzallo
Ginn c1927 Enl. ed
Available at 6 libraries
Ginn c1927
Available at 9 libraries
Harverd University Press c1926 Inglis lectures in secondary education series 1925
G.P.O. 1922 Bulletin / Department of the Interior, Bureau of Education 1921, no. 38
Harcourt, Brace and Howe c1927
G.P.O. 1919 Bulletin / Department of the Interior, Bureau of Education 1919, no. 15