Columbia subject headings:
Dierichs, Paul--Art collections.
Portrait sculpture, Roman--Germany--Bochum.
Ruhr-Universität Bochum--Catalogs.
Sculpture, German--Germany--Bochum--20th century.
Harvard subject headings:
Dierichs, Paul--Art collections--Catalogs.
Dierichs, Paul--Art collections.
Portrait sculpture, Roman--Germany--Bochum--Catalogs.
Portrait sculpture, Roman--Germany--Bochum.
Ruhr-Universität Bochum. Kunstsammlungen--Catalogs.
Sculpture, German--Germany--Bochum--20th century.
Sculpture, Modern--20th century--Germany--Bochum--Catalogs.
Princeton subject headings:
Dierichs, Paul--Art collections.
Portrait sculpture, Roman--Germany--Bochum.
Sculpture, German--20th century--Bochum.