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Леонард Ойлер (Leonhard Euler) почита Google Doodle - Видео Клип www.videoclip.bgban site

Леонард Ойлер Leonhard Euler Google Doodle - Кое е Леонард Ойлер (на немски: Leonhard Euler) е швейцарски математик, физик и астроном, работил през го...
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