Columbia subject headings:
Painting, Medieval--Technique--Early works to 1800.
Theophilus, Presbyter, active 12th century. De diversis artibus.
Harvard subject headings:
Painting, Medieval--Technique--Early works to 1800.
Painting--Technique--History--To 1500.
Theophilus, Presbyter, active 12th century. De diversis artibus.
Theophilus, Presbyter. De diversis artibus.
Princeton subject headings:
Painting--Early works to 1800.
Theophilus, Presbyter, active 12th century. De diversis artibus.