Columbia subject headings:
Groth, Klaus, 1819-1899--Political and social views.
Schleswig-Holstein question.
Storm, Theodor, 1817-1888--Political and social views.
Harvard subject headings:
Groth, Klaus, 1819-1899--Political and social views.
Schleswig-Holstein (Germany)--Politics and government.
Storm, Theodor, 1817-1888--Political and social views.
Princeton subject headings:
Groth, Klaus, 1819-1899--Political and social views.
Schleswig-Holstein question.
Storm, Theodor, 1817-1888--Political and social views.