An index number for state school systems

में बचाया:
ग्रंथसूची विवरण
OCLC:1613104
मुख्य लेखक: Ayres, Leonard Porter, 1879-1946
भाषा:English
प्रकाशित: New York, Department of Education, Russell Sage Foundation, c1920.
श्रृंखला:[Russell Sage foundation, New York. Dept. of education. Publications] E141.
विषय:
स्वरूप:

Monograph

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