En
RuPublic organizations
Public organizations
Materials and decisions of the 1 st Ryazan provincial congress of the Society of Friends of Defense and Aviation Chemical Construction
Materials and decisions of the 1 st Ryazan provincial congress of the Society of Friends of Defense and Aviation Chemical Construction. [Ryazan]: Riazubsovet Osoaviakhima, 1929.
1929
Рязанская ОУНБ