Columbia subject headings:
Harvard subject headings:
New Caledonia--Colonization--Congresses.
New Caledonia--History--Congresses.
New Caledonia--Population--Congresses.
Princeton subject headings:
Contract labor--Oceania--Congresses.
New Caledonia--Colonization--Congresses.
New Caledonia--Emigration and immigration--History--19th century--Congresses.
Oceania--Economic conditions--Congresses.
Oceania--Emigration and immigration--History--19th century--Congresses.
Oceania--Social conditions--Congresses.
Penal colonies--New Caledonia--Congresses.