[Activities of Society of Sanitary Engineers in the field of rural improvements].
D012424:Rural Population; D012498:Sanitary Engineering; D012499:Sanitation
SANITATION
Delatel'nost' Vsesoiuznogo nauchnogo inzhenernotekhnicheskogo obshchestva vodosnabzheniia i sanitarnoi tekhniki po blagoustroistvu sela.