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31 Mai 1900 Jahr - The invention of lead pencils
Beschreibung:
The invention and mass production of lead pencils and white paper, replaced the classroom slate.
Zugefügt zum Band der Zeit:
The history of Ed Tech
By
julia cline
4 Dez 2017
0
0
441
Datum:
31 Mai 1900 Jahr
Jetzt
~ 125 years ago
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