[On the objectives and scope of health surveys among the population of the Kosice and Barodejov districts].
D003604:Czechoslovakia; D006306:Health Surveys; D006801:Humans; D009787:Occupational Medicine; D012924:Social Conditions
O ciel'och a obsahu výskumu zdravotného stavu obyvatel'stva v okresoch Kosice a Bardejov.