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6. Simplified method of obtaining the reclining position in placentography. ALEXANDER OM Radiography; 1957 May; 23(269):132-3. PubMed ID: 13432158 [No Abstract] [Full Text] [Related]
7. Discussion on soft-tissue placentography. LAW RG; HARTLEY JB; PERCIVAL R; LEWIS TL Proc R Soc Med; 1959 Jul; 52(7):557-66. PubMed ID: 14414690 [No Abstract] [Full Text] [Related]