[Expansion of collective farms and tasks of rural public health during the period of work in the field].
D002648:Child; D002669:Child Welfare; D006801:Humans; D011634:Public Health; D012424:Rural Population; D014937:Work
CHILD WELFARE; PUBLIC HEALTH
Ukrupnenie kolkhozov i zadachi sel'skogo zdravookhranemiia v period polevykh rabot.