Agarwal, D K Chemical nature and distribution of calcium compounds in radiolucent gallstones. [electronic resource] - Scandinavian journal of gastroenterology Jul 1993 - 613-6 p. digital Publication Type: Journal Article ISSN: 0036-5521 Standard No.: 10.3109/00365529309096098 doi Subjects--Topical Terms: AdultBilirubin--analysisCalcium--analysisCalcium Carbonate--analysisCalcium Phosphates--analysisCholelithiasis--chemistryCholesterol--analysisElectron Probe MicroanalysisFemaleHumansMaleMicroscopy, Electron, ScanningMiddle AgedRadiography