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Operacijski sustavi d.o.o.
Viktora Kovačića 5
10000 Zagreb
 
Porezni broj: 1666673
OIB: 81308727723
ěrn: 2484008-1101400928 (Raiffeisen bank)
 
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tel: +385 1 6623840
fax: +385 1 6623842