Columbia subject headings:
Central America--Bibliography.
Panama--Bibliography.
Reference books--Central America--Bibliography.
Social sciences--Central America--Bibliography.
Social sciences--Panama--Bibliography.
Harvard subject headings:
Princeton subject headings:
Central America--Economic conditions--Bibliography--Union lists.
Central America--Politics and government--Bibliography--Union lists.
Central America--Social conditions--Bibliography--Union lists.
Reference books--Central America--Bibliography--Union lists.
Union catalogs--Central America.
Union catalogs--United States.