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English thesaurus
Retardation Factor
NASA, abbr.	RF

Retardation: 45 phrases in 17 subjects

Agriculture	2
Communications	2
Deafblindness	1
Electric motors	1
Electronics	3
General	1
Geology	1
Health care	5
Industry	1
Life sciences	2
Mechanic engineering	3
Medical	10
Ophthalmology	1
Politics	1
Social science	2
Technology	5
Transport	4