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koncentracja f
econ.	opération de concentration
math.	concentration f

koncentracja: 45 phrases in 18 subjects

Analytical chemistry	1
Banking	1
Business	2
Commerce	2
Construction	4
Economy	6
Electrochemistry	1
Environment	2
Finances	6
Fish farming pisciculture	2
Law	2
Mathematics	8
Nuclear physics	1
Piezoelectric crystals	1
Politics	1
Radio	3
Semiconductors	1
Transport	1