HDO
Berislavićeva 6,
10000 Zagreb

tel.: 01/4922-021,
fax: 01/4922-023,
e-mail: hdo@hdo.hr

Administrator of HDO:
Davor Dokmanić
tel: 01/49 22 021
fax: 01/49 22 023
e-mail: hdo@hdo.hr

Vice President of HDO :
Dr. Ivo Čala,
tel: 01/61 68 376
e-mail: ivo.cala@fsb.hr