Columbia subject headings:
Harvard subject headings:
Civil war--Case studies.
Civil war.
El Salvador--History--Civil War, 1979-1992
Intervention (International law)--Case studies
Moro National Liberation Front.
Philippines--Politics and government--1973-1986.
Sri Lanka--History--Civil War, 1983-2009.
Princeton subject headings:
Case studies.
Civil war.
Intervention (International law)--Case studies.
Syria--History--Civil War, 2011-