American educator encyclopedia. Vol.9. S.
SENTMAN (Everette Edgar) and Others Ed.
American educator encyclopedia. Vol.9. S. - Chicago The United Educators, Inc. 1961 - 3151-3494 - 9 .
040/128
American educator encyclopedia. Vol.9. S. - Chicago The United Educators, Inc. 1961 - 3151-3494 - 9 .
040/128