By Witzig Stephen B.   Halverson Kristy L.   Siegel Marcelle A.   Freyermuth Sharyn K.   in International Journal of Science Education

ISSN:1464-5289|35|15|2483-2507

Routledge Ltd‎(2013)‎

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By Siegel Marcelle   in Environmental Education Research

ISSN:1469-5871|12|2|201-215

Routledge Ltd‎(2006)‎

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By Siegel Marcelle   Wissehr Cathy   in Journal of Science Teacher Education

ISSN:1046-560X|22|4|371-391

Springer Publishing Company ‎(2011)‎

Access to resources Favorite 3.5378313

By Halverson Kristy Lynn   Siegel Marcelle   Freyermuth Sharyn   in International Journal of Science Education

ISSN:1464-5289|31|9|1249-1268

Routledge Ltd‎(2009)‎

Access to resources Favorite 2.6533735