Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
 
    
    
Subject: Canon Law
Author of work: Johannes Andreae
Title: Comment. in Sextum librum Decretalium
 
    
Subject: Theology
Author of work: Gregorius I
Title: Moralia
 
    
Subject: Biblica
Title: Biblia
 
    
Subject: Music
Title: Polyphonic music
 
    
Subject: Canon Law
Author of work: Guido de Baysio
Title: Comment. in Sextum librum Decretalium
 
    
Subject: Canon Law
Author of work: Gratianus
Title: Decretum
 
    
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
 
    
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus