Extent: | V, 63 S Kt., graph. Darst |
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Series: | Publications of the US Office of Education. - Washington, DC : US Gov.Print.Off., ZDB-ID 785643-X. - Vol. 1939, 8 |
Type of publication: | Book / Working Paper |
Language: | English |
Source: | ECONIS - Online Catalogue of the ZBW |
Persistent link: https://www.econbiz.de/10001565795