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Plate 20 6 20 extract 300px.jpeg

Credit(s): ENCYCLOPÉDIE OU DICTIONNAIRE RAISONNÉ DES SCIENCES, DES ARTS ET DES MÉTIERS

Source: http://hera.inalf.cnrs.fr/cgi-bin/getobject_?a.138:13:20./home/leonid/artfl/ENC/

Description:

Fig. 1. L'opération du trépan.


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