by
Yan, Hong-Sen. author.
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original machines cannot be verified and many of the inventions did not pass down to later generations
by
Samuel, Andrew Emery. author.
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inventions described are intended to be well within the range of ingenuity and skills of first- and
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by
López-Cajún, Carlos. editor.
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Electronic Resources
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Historical Mechanism’s Model, by Olga Egorova, Kirill Samsonov and Alexandra Sevryukova -- Some Inventions by
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