[TWENTY YEARS OF PUBLIC HEALTH IN CZECHOSLOVAKIA].
D003604:Czechoslovakia; D006664:History; D049673:History, 20th Century; D006801:Humans; D008511:Medicine; D011634:Public Health; D011635:Public Health Administration
CZECHOSLOVAKIA; HISTORY; HISTORY OF MEDICINE, 20TH CENT.; PUBLIC HEALTH ADMINISTRATION
DVACET LET P'E CE O ZDRAV'I V CSSR.