Utkin, V M [Potassium and sodium levels in the blood of the mother and twins immediately after birth]. [electronic resource] - Voprosy okhrany materinstva i detstva Jun 1970 - 67-9 p. digital Publication Type: Journal Article ISSN: 0042-8825 Subjects--Topical Terms: FemaleHumansMaternal-Fetal ExchangePotassium--bloodPregnancySodium--bloodTwins