Young, M C Neutron activation analysis of dysprosium (a potential inert marker) in hay and feces. [electronic resource] - Journal of animal science Jul 1975 - 178-84 p. digital Publication Type: Journal Article ISSN: 0021-8812 Standard No.: 10.2527/jas1975.411178x doi Subjects--Topical Terms: Activation AnalysisAnimal Feed--analysisAnimalsCattle--metabolismDysprosium--analysisFeces--analysisHalf-LifeMedicago sativa--analysisNeutron Activation Analysis--methodsRadioisotopes--analysis