By Osler Thomas J.   Wright Marcus   Orchard Michael   in International Journal of Mathematical Education in Science and Technology

ISSN:1464-5211|36|4|389-398

Taylor & Francis Ltd‎(2005)‎

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By Beranek Luke P.   Mortensen James K.   Orchard Michael J.   Ullrich Thomas   in Canadian Journal of Earth Sciences

ISSN:1480-3313|47|1|53-73

NRC Research Press‎(2010)‎

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