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Type Year Authors Title Source ID
Journal Article 1990 Metges, C. Dependence of the carbon-isotope contents of breath carbon dioxide, milk, serum and rumen fermentation products on the delta 13C value of food in dairy cows British Journal of Nutrition [Metges, 1990 #34588]
Journal Article 1982 Nakamura, K. Geographical variations in the carbon isotope composition of the diet and hair in contemporary man Biomedical Mass Spectrometry [Nakamura, 1982 #34582]