Extent: | X, 180 S. Ill., graph. Darst., Kt. |
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Series: | Bulletin / Office of Education, US Department of Health, Education and Welfare. - Washington, DC, ZDB-ID 951494-6. - Vol. 1959, 20 |
Type of publication: | Book / Working Paper |
Language: | English |
Source: | ECONIS - Online Catalogue of the ZBW |
Persistent link: https://www.econbiz.de/10002050581