context: In August 1925 he became a student at Leningrad State University. There, he pre-designed a planetary sonar ("Helioraketoplan") with an electric propulsion system. This work was quoted by the armed forces. Since May 1929, he has been a leading figure in the GDL (Gas Dynamics Laboratory) in Leningrad. This laboratory was the first to develop Russian liquid rocket engines. Gluško developed ORM engines, which were used to power RLA rockets.
question: Where did Valentin Petrovich Gluško study rocket engineering?
answers.text: Leningrad State University