Columbia subject headings:
Wernher, der Gartenaere, active 13th century--Appreciation.
Wernher, der Gartenaere, active 13th century--Influence.
Wernher, der Gartenaere, active 13th century. Helmbrecht.
Harvard subject headings:
Civilization, Medieval, in literature.
Wernher, der Gartenaere, active 13th century--Appreciation.
Wernher, der Gartenaere, active 13th century--Influence.
Wernher, der Gartenaere, active 13th century. Helmbrecht.
Princeton subject headings:
Wernher, der Gartenaere, active 13th century--Appreciation.
Wernher, der Gartenaere, active 13th century--Influence.
Wernher, der Gartenaere, active 13th century. Helmbrecht.