Third Volume - Commentary on John of Holywood's Spheres - I - Page 6 Third Volume - Commentary on John of Holywood's Spheres - I - Page 7
Third Volume - Commentary on John of Holywood's Spheres - Preface - Page 5



Third Volume - Commentary on John of Holywood's Spheres - I - Page 6 Third Volume - Commentary on John of Holywood's Spheres - I - Page 7 Third Volume - Commentary on John of Holywood's Spheres - I - Page 8