Items
Source is exactly
Principia Philosophiae 1656
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Descartes - Principia Philosophiae (1656 Jansonium) Book cover
Cover page for Descartes's Principia of 1656 -
Descartes - Principia Philosophiae (1656 Elzevier) Book Cover
Cover page for Descartes's Principia of 1656 -
Descartes - Principia 1656 (cover)
Cover page for Descartes's Principia of 1656