Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
 
    
Subject: Canon Law
Title: Index to Decretum Gratiani
 
    
Subject: Philosophy
Author of work: F. Petrarchus (Francesco Petrarca)
Title: De remediis utriusque fortunae
 
    
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales