Columbia subject headings:
Harvard subject headings:
Cerro Negro (Nicaragua)--Eruption, 1992--Maps.
Volcanic activity prediction--Nicaragua--Maps.
Volcanic hazard analysis--Nicaragua--Maps.
Volcanism--Nicaragua--Maps.
Volcanoes--Nicaragua--Maps.
Princeton subject headings:
Cerro Negro (Nicaragua)--Eruption, 1992--Maps.
Maps.
Thematic maps.
Volcanic activity prediction--Nicaragua--Maps.
Volcanic hazard analysis--Nicaragua--Maps.
Volcanism--Nicaragua--Maps.
Volcanoes--Nicaragua--Maps.