Săjuz na geodezistite i zemeustroitelite v Bălgarija
| Alternativně jako: |
Union of Surveyors and Land Managers in Bulgaria USLMB |
|---|---|
| Zdroj: |
16th international symposium on "Modern technologies, education and professional practice in geodesy and related fields" www(Union of Surveyors and Land Managers in Bulgaria) |