1. De officiis Creator: Cicero, Marcus Tullius (106-43 př. Kr.), Petrus Marsus, Omnibonus Leonicenus, Martinus Phileticus, Rizus, Bernardinus, and Calerius, Bernardinus Publisher: Bernardinus Rizus et Bernardinus Calerius Type: model:monograph and TEXT Language: Latin Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public