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Start Over You searched for: Holding Institution Science History Institute ✖ Remove constraint Holding Institution: Science History Institute Author Petrus Bonus ✖ Remove constraint Author: Petrus Bonus Former Owner Johan Laborya de Mossach ✖ Remove constraint Former Owner: Johan Laborya de Mossach Keywords Bonus, Petrus, active 1323-1330--Manuscripts ✖ Remove constraint Keywords: Bonus, Petrus, active 1323-1330--Manuscripts