Title: Osvoenie i seriĭnoe proizvodstvo oboronnoĭ promyshlennostʹi︠u︡ Leningrada novogo artilleriĭskogo vooruzhenii︠a︡ (20-e--30-e gody XX veka)
Subjects: Defense industries, History
Places: Russia (Federation), Saint Petersburg
Time periods: 20th century