Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Philosophy
Author of work: Aegidius Romanus
Title: De regimine principum
Subject: Philosophy
Author of work: Aegidius Romanus
Title: De regimine principum
Subject: Philosophy
Author of work: Aegidius Romanus
Title: De regimine principum
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Title: Commentary on Decretals
Subject: Canon Law
Title: Liber sextus Decretalium
Subject: Canon Law
Title: Commentary on Decretals
Subject: Canon Law
Title: Commentary on Decretum Gratiani
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales