By ANDRES LESLEY   GRAYSON J. PAUL   in Journal of Youth Studies

ISSN:1469-9680|6|2|181-202

Routledge Ltd‎(2003)‎

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By Adamuti-Trache Maria   Andres Lesley   in International Journal of Science Education

ISSN:1464-5289|30|12|1557-1584

Routledge Ltd‎(2008)‎

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