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ISSN:0953-4075|47|7|75302-75308

IOP Publishing‎(2014)‎

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By Pace T.M.   Mullins L.L.   Beesley D.   Hill J.S.   Carson K.   in Contemporary Educational Psychology

ISSN:0361-476X|24|2|140-155

Academic Press‎(1999)‎

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