[ON THE X-RAY DIAGNOSIS OF PERFORATING DUODENAL ULCERS].
D004381:Duodenal Ulcer; D006801:Humans; D010439:Peptic Ulcer Perforation; D011859:Radiography; D014965:X-Rays
DUODENAL ULCER; PEPTIC ULCER PERFORATION; RADIOGRAPHY
K VOPROSU O RENTGENODIAGNOSTIKE PENETRIRUIUSHCHIKH IAZV DVENADTSATIPERSTNO I KISHKI.