Ibn-al-Haitam, al-Hasan Ibn-al-Hasan; Witelo; Risner, Friedrich, Opticae thesavrvs Alhazeni Arabis libri septem, nunc primùm editi. Eivsdem liber De Crepvscvlis & Nubium ascensionibus. Item Vitellonis Thuvringopoloni Libri X. Omnes instaurati, figuris illustrati & aucti, adiectis etiam in Alhazenum commentarijs, a Federico Risnero, 1572
<head xml:id="echoid-head479" xml:space="preserve" style="it">1. Viſio fit trifariam: rectè, reflexè & refractè. In præfat. 1. 10 libr. Idem 1 n 4.</head>
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<s xml:id="echoid-s16499" xml:space="preserve">PRædictum eſt in proœmio quarti tractatus huius libri [1 n] quòd uiſus tribus modis