[Toward improvement of the sanitary-prophylactic service of the collective villages].
D004777:Environment; D006801:Humans; D006920:Hygiene; D008511:Medicine; D012426:Russia; D012499:Sanitation
HYGIENE AND SANITATION/in Russia; MEDICINE/in Russia
Uluchshim sanitarno-profilakticheskoe obsluzhivanie kolknoznogo sela.