Columbia subject headings:
Etching--20th century--Exhibitions.
Etching--Private collections--Germany--Stuttgart--Exhibitions.
Hauff, Günther, 1927---Art collections--Exhibitions.
Hauff, Renate--Art collections--Exhibitions.
Harvard subject headings:
Etching--20th century--Exhibitions.
Etching--Private collections--Germany--Stuttgart--Exhibitions.
Hauff, Günther, 1927---Art collections--Exhibitions.
Hauff, Günther--Art collections--Exhibitions.
Hauff, Renate--Art collections--Exhibitions.
Princeton subject headings:
Etching--20th century--Exhibitions.
Hauff, Günther, 1927---Art collections--Exhibitions.
Hauff, Renate--Art collections--Exhibitions.