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ISSN:0891-4222|24|6|453-465

Elsevier‎(2003)‎

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By Hemmes N.S.   Brown B.L.   Jakubow J.J.   Cabeza de Vaca S.   in Learning and Motivation

ISSN:0023-9690|28|4|542-557

Academic Press‎(1997)‎

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