Terrain: flat coastal plain rises to mountains in east; hilly lowland in west

Natural resources: crude oil, natural gas, timber

Land use: 1% arable land; 1% permanent crops; 1% meadows and pastures; 79% forest and woodland; 18% other; includes NEGL% irrigated

Environment: typhoons, earthquakes, and severe flooding are rare

Note: close to vital sea lanes through South China Sea linking Indian and Pacific Oceans; two parts physically separated by Malaysia; almost an enclave of Malaysia

- People
Population: 372,108 (July 1990), growth rate 7.1% (1990)

Birth rate: 23 births/1,000 population (1990)

Death rate: 4 deaths/1,000 population (1990)

Net migration rate: 52 migrants/1,000 population (1990)

Infant mortality rate: 10 deaths/1,000 live births (1990)