By Sharma Manjula D   Mendez Alberto   Sefton Ian M   Khachan Joe   in European Journal of Physics

ISSN:0143-0807|35|2|25004-25020

IOP Publishing‎(2014)‎

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By Sharma Manjula D.   Millar Rosemary M.   Smith Andrew   Sefton Ian M.   in Research in Science Education

ISSN:0157-244X|34|3|267-289

Springer Publishing Company ‎(2004)‎

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