Sample selectivity and the validity of international student achievement tests in economic research
| Year of publication: |
2011
|
|---|---|
| Authors: | Hanushek, Eric A. ; Woessmann, Ludger |
| Published in: |
Economics letters. - Amsterdam [u.a.] : Elsevier, ISSN 0165-1765, ZDB-ID 7172102. - Vol. 110.2011, 2, p. 79-83
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