(NgIGIENA FIZI^ESKIH UPRAVNENIJ (B/s - (NcANDER(B, (NrIHARDs; (NvOLKOW(B, (Nm(B. s ((NsANKT(B-(NpETERBURG (B.s (Np(B.(Np(B. (NsOJKIN(B, s, 1913)
Keywords: (NgIGIENA NERABO^EGO WREMENIs; (NgIGIENA OTDYHA I SNAs