[TRENDS IN THE NATALITY OF THE AGRICULTURAL POPULATION].
D000383:Agriculture; D003604:Czechoslovakia; D006801:Humans; D011153:Population; D012423:Rural Health; D014798:Vital Statistics
CZECHOSLOVAKIA; POPULATION; RURAL HEALTH; VITAL STATISTICS
TENDENCIE V NATALITNEJ 'UROVNI POL'NOHOSPOD'ARSKEHO OBYVATEL'STVA.