[Some problems of reduction of perinatal mortality in URSR].
D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007743:Labor, Obstetric; D011247:Pregnancy; D012959:Socioeconomic Factors; D014455:Ukraine
Deiaki pytannia znyzhennia perynatal'noï smertnosti v URSR.