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Estimating the latitudinal origins of migratory birds using hydrogen and sulfur stable isotopes in feathers: influence of marine prey base[J] . Casey A. Lott,Timothy D. Meehan,Julie A. Heath.Oecologia . 2003 (4)
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Tracing the diet of the monitor lizard Varanus mabitang by stable isotope analyses (δ15N, δ13C)[J] . Ulrich Struck,Alexander V. Altenbach,Maren Gaulke,Frank Glaw.Naturwissenschaften . 2002 (10)