https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%22CONCEPTOS%20GEOMETRICOS%22%29&sort_by=title_az&format=rss 5 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=71835 By Dunham, Penelope H..
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35-49

]]> Place hold on Learning how to see : students'graphing difficulties

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24, 70

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575-594

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471-477

]]> Place hold on Some reflections on plane mirrors and images

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179-202

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