Columbia subject headings:
Afghanistan--Foreign relations--Soviet Union.
Afghanistan--Politics and government--1973-1989.
Soviet Union--Foreign relations--Afghanistan.
Harvard subject headings:
Afghanistan--Foreign relations--Soviet Union
Afghanistan--Politics and government--1973-1989
Soviet Union--Foreign relations--Afghanistan
Princeton subject headings:
Afghanistan--Foreign relations--Soviet Union.
Afghanistan--Politics and government--1973-1989.
Soviet Union--Foreign relations--Afghanistan.