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AJHD - Adam Hart-Davis (1182)

abacus-

 
(c) AJHD: Adam Hart-Davis, http://www.adam-hart-davis.org/. For full-quality high-res copies of more of Adam Hart-Davis' photos (not free!), please contact the Science Photo Library in London by email or phone +44 (0) 20 7432 1100.


abacus 1 AJHD.jpg ... abacus 4 AJHD.jpg

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MiniaturaNombre del Objeto
Miniaturaabacus 1 AJHD.jpg (Partes Mecánicas)
Miniaturaabacus 2 AJHD.jpg (Partes Mecánicas)
Miniaturaabacus 3 AJHD.jpg (Partes Mecánicas)

On wooden surface, being operated.

Miniaturaabacus 4 AJHD.jpg (Partes Mecánicas)

On white surface, being operated.

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