Пышкало А. М. Доли величины. Дроби. — 1967
Пышкало А. М. Доли величины. Дроби : диафильм по математике для восьмилетней школы. — М. : студия «Диафильм», 1966. — [3], 36 кадров.
© «Математическое образование», 2006—2024
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