vietnam

•  31.100 bibliographies, dictionaries and journals
•  31.200 general works
•  31.250 general works, North Vietnam 1954-1975
•  31.300 geography, description and travel
•  31.350 geography, description and travel, North Vietnam 1954-1975
•  31.400 language, script
•  31.450 literature
•  31.500 history, general works and up to 1945
•  31.510 history, 1945- (i.a. Vietnamese War)
•  31.600 law, politics and government
•  31.650 law, politics and government, North Vietnam 1954-1975
•  31.700 economy
•  31.750 economy, North Vietnam 1954-1975
•  31.800 social conditions
•  31.810 education
•  31.815 education, North Vietnam 1954-1975
•  31.900 religion and Christian missions
• 31.950 religion and Christian missions, North Vietnam 1954-1975
• 31.1000 art and archeology, culture
• 31.1050 art and archaeology, culture, North Vietnam 1954-1975
• 31.1100 natural history, geology, palaeontology
• 31.1150 natural history, geology, palaeontology, North Vietnam 1954-1975