[Soviet housing hygiene; 40th anniversary of the Great October Socialist Revolution].
D000846:Anniversaries and Special Events; D006798:Housing; D006801:Humans; D006920:Hygiene; D012499:Sanitation
HOUSING; SANITATION
Sovetskaia zhilishchnaia gigiena; k 40-letiiu Velikoi Oktiabr'skoi sotsialisticheskoi revoliutsii.