Brechbühler, T Ammonia determination in very small samples. [electronic resource] - Zeitschrift fur klinische Chemie und klinische Biochemie May 1974 - 250 p. digital Publication Type: Journal Article ISSN: 0044-2933 Subjects--Topical Terms: Ammonia--analysisCation Exchange ResinsChildChild, PreschoolHumansInfantPhotometry