Keywords: Nikola Petrov3.jpeg Ка тината а одният театъ от бълга ския художник икола Пет ов 1881-1916 Painting The national theatre by Bulgarian painter Nikola Petrov 1881-1916 http //flickr com/photos/70058529 N00/400041964 1912 Nikola Petrov PD-art Nikola Petrov |