An economically inseparable chain of tasks aimed towards a common set of goals, related to the implementation of a specific technical function.
7 April 2017The material was published in the journal "Panorama", № 60, April 2017 Having opened in 1998, the Sofia Metro has expanded in recent years thanks to a series of EU-funded projects. Now, a third line is being added. The goal is to make the metro...
31 March 2017