HDO
Berislavićeva 6,
10000 Zagreb

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

Secretary of HDO:
Tomislav Šarčević, dipl. inž.
tel:++385 1 49 22 021,
fax ++385 1 49 22 023
e-mail: tomislav.sarcevic@pliva.hr

Vice President of HDO:
Dr. Ivo Čala,
tel: ++385 1 61 68 376
e-mail: ivo.cala@fsb.hr

Administrator OF HDO:
Davor Dokmanić
tel: ++385 1 49 22 021,
fax ++385 1 49 22 023
e-mail: hdo@hdo.hr