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- [41] Carbon isotope ratios of nucleic acids from environmental samples. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2002, 224 : U588 - U588
- [48] Bioapatite carbon isotope ratios used to distinguish sheep from goats in the archaeological record in C4 plants environments. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2003, 225 : U937 - U937