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Introduction of Lead Pencils (1 янв 1885 г. – 9 ноя 1910 г.)

Описание:

The slate began to be replaced as lead pencils and paper became easily accessible.

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Education Timeline

3 дек 2017

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Дата:

1 янв 1885 г.

9 ноя 1910 г.

~ 25 years

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