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English thesaurus
National Academy of Sciences
abbr., oil	NAS (A private, nonprofit research organisation established by a Congressional charter to be the official adviser to the government on scientific and technological matters)
abbr., post	NAS (USA)
abbr., tech.	*S* (Vosoni)
ocean., abbr.	NAS
National Academy of Science
abbr., opt.	NAS
astronaut., abbr.	NAS (US)

National: 283 phrases in 29 subjects

Accounting	1
Chemistry	1
Commerce	1
Communications	3
Ecology	7
Economy	49
Education	11
Employment	1
Energy industry	2
Environment	25
Finances	12
Forestry	1
General	39
Health care	7
Human rights activism	5
Immigration and citizenship	16
Information technology	2
Insurance	3
Law	52
Microsoft	4
Obsolete / dated	7
Patents	3
Politics	8
Private international law	6
Security systems	3
Social science	3
Statistics	4
Technology	1
Transport	6