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Fields of service
Graz (Austria) - Head Office
Orpheumgasse 15
8010 Graz
Phone: 0316/38 19 15
Fax: 0316/38 19 15-22
E-Mail: 
office(at)gdp.at 
Map & arrival
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Klagenfurt (Austria) - Branch Office
Krone Platz 1
9020 Klagenfurt
Phone: 0463/420 380
Fax: 0463/420 380-5
E-Mail: office.ktn(at)gdp.at Map & arrival
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Oberalm / Salzburg (Austria) - Branch Office
Fischer-Villa-Straße 2
5411 Oberalm
Phone: 06245/73 28 2
Fax: 06245/73 28 2-5
E-Mail: office.sbg(at)gdp.at Map & arrival
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Vienna - Branch Office
Schönbrunner Straße 59-61
1050 Vienna
Phone: 01/547 10 76
Fax: 01/547 10 92
E-Mail: office.wien(at)gdp.at Map & arrival