Russian S.F.S.R. Narodnyĭ komissariat zdravookhranenii︠a︡

• Materialy Gubernskogo soveshchanii︠a︡ zemelʹnykh rabotnikov Novgorodskoĭ gubernii, 30 noi︠a︡bri︠a︡-4 dekabri︠a︡ 1925 goda