Complex sentence: On August 1,1927, the uyezds and governorates were abolished and Pustoshkinsky District, with the administrative center in Pustoshka, was established as a part of Velikiye Luki Okrug of Leningrad Oblast.
Split into simpler sentences: On August 1,1927, the uyezds were abolished, and Pustoshkinsky District was established, with the administrative center in Pustoshka. The governorates were abolished as well, and the district became a part of Velikiye Okrug of Leningrad Oblast.