Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
 
    
Subject: Classics
Author of work: Ps. Ovidius
Title: De vetula
 
    
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: History
Author of work: Poggius
Title: Defensiuncula
 
    
Subject: Philosophy
Title: De septem vitiis
 
    
Subject: Canon Law
Title: Liber sextus Decretalium
 
    
Subject: Canon Law
Title: Commentary on Decretum Gratiani