Be prepared for PVCHO: a manual for preparing for the surrender of the "Ready for PVCHO" first step (for the urban population)

Be prepared for PVCHO: a manual to prepare for the surrender of the standards "is ready for the PVCHO" of the first stage (for the urban population).- M.: State Military Publishing House of the People's Commissariat of Defense of the USSR, 1938. -.Electronic copy source: PB