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source f
astr.	zřídlo
construct.	vývěr (pod vodou); zdroj; klíč; klávesa
environ.	pramen; zdroj emisí

source : 223 phrases in 21 subjects

Acoustics	2
Agriculture	1
Astronomy	15
Chemistry	2
Construction	41
Data processing	2
Earth sciences	1
Economics	4
Electronics	5
Environment	29
Finances	8
Forestry	3
General	28
Health care	2
Hydraulic engineering	1
Microsoft	58
Nuclear and fusion power	4
Nuclear physics	9
Politics	1
Taxes	3
Transport	4