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The teacher writes the formula on the Board. Stand at the blackboard. Lecture at the University

Name: the teacher writes the formula on the Board. Stand at the blackboard. Lecture at the University
Uploaded: 2016-10-07
Duration: 9 s
Channel: tematopman
Description: the teacher writes the formula on the Board. Stand at the blackboard. Lecture at the University

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219.26 MB

tematopman

63545922

9.96s

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