Columbia subject headings:
Harvard subject headings:
Hacks, Peter, 1928-2003--Appreciation--Germany (East)
Hacks, Peter, 1928-2003--Appreciation--Germany (West)
Princeton subject headings:
Hacks, Peter, 1928-2003--Appreciation--Germany (East).
Hacks, Peter, 1928-2003--Appreciation--Germany (West).