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Schooten Exercitationum mathematicarum libri .tif Book Schooten Franz van Exercitationum mathematicarum libri ex officina Johannis Elseuirii Lugd Batav lat it Francisci Schooten Exercitationum mathematicarum libri quinque Propositionum arithmeticarum et geometricarum centuria Constructio problematum simplicium geometricorum