Harduf, Z Norleucine--an internal standard for the basic column used in physiological amino acid analysis. [electronic resource] - Journal of chromatography Sep 1977 - 215-7 p. digital Publication Type: Journal Article Standard No.: 10.1016/s0021-9673(01)84148-0 doi Subjects--Topical Terms: Amino Acids--analysisAminocaproatesAnimalsCattleChromatography, Ion Exchange--methodsFeces--analysisNorleucineSewage--analysis