(NkOMMUNALXNAQ GIGIENA (B:s (Nu^EBNIK (B/s - (NmARZEEW(B, (NaLEKSANDR nIKITI^s; (NaGLICKIJ(B, (Ns(B.(Ns(B.s ((NmOSKWA (B:s (NmEDGIZ (B,s, 1958)
Keywords: (NgIGIENAs -- (Nu^EBNIKIs