Columbia subject headings:
Afghan Social Democratic Party.
Afghanistan--History--Soviet occupation, 1979-1989.
Afghanistan--Politics and government--1973-1989.
Harvard subject headings:
Afghan Social Democratic Party.
Afghanistan--History--Soviet occupation, 1979-1989.
Afghanistan--Politics and government--1973-1989.
Princeton subject headings:
Afghan Social Democratic Party.
Afghanistan--History--Soviet occupation, 1979-1989.
Afghanistan--Politics and government--1973-1989.