Morris, R. Studies in mathematics education the education of secondary school teacher of mathematics. UNESCO.
Παραπομπή σε μορφή Chicago (17η εκδ.)Morris, Robert. Studies in Mathematics Education the Education of Secondary School Teacher of Mathematics. UNESCO.
Παραπομπή σε μορφή MLA (8th εκδ.)Morris, Robert. Studies in Mathematics Education the Education of Secondary School Teacher of Mathematics. UNESCO.
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