[Sanitation propaganda in districts of conquering virgin soil and fallow grounds].
D011406:Propaganda; D011634:Public Health; D012423:Rural Health; D012424:Rural Population; D012499:Sanitation; D012987:Soil
D012987:Soil
PUBLIC HEALTH; RURAL CONDITIONS
Sanitarnaia propaganda v raionakh osvoeniia tselinnykh i zalezhnykh zemel'.