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| Citation | Provenance | Copyright | ||
|---|---|---|---|---|
| Bachman, J. G. (1970). Youth in Transition. Volume II, The Impact of Family Background and Intelligence on Tenth-Grade Boys. https://eric.ed.gov/?id=ED051414 | https://eric.ed.gov/?id=ED051414 (page 135) | 1970. Jerald G. Backman. Michigan University | ||
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