Slide rule for management of erythroblastosis fetalis.
D000653:Amniotic Fluid / Q000032:analysis; D003720:Densitometry; D004899:Erythroblastosis, Fetal; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D013057:Spectrum Analysis