By Barwell Richard   Barton Bill   Setati Mamokgethi   in Educational Studies in Mathematics

ISSN:0013-1954|64|2|113-119

Springer Publishing Company ‎(2007)‎

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By Pescador Manuel   Richard Barton   Hubbard Michael   Staniczek Arnold   in Aquatic Insects

ISSN:0165-0424|31|1|137-147

Taylor & Francis Ltd‎(2009)‎

Access to resources Favorite 7.108718