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1
0162373709352239
0162373709352239
http://dx.doi.org/10.3102/0162373709352239
Quality of Research Design Moderates Effects of Grade Retention on Achievement: A Meta-analytic, Multi-level Analysis.
P356
Q34066455-46F18852-EE53-4495-B40B-04ACCBE0CDEC
P356
0162373709352239
http://dx.doi.org/10.3102/0162373709352239