TY - CONF A1 - Macko, S A A1 - Kennicutt, M C T1 - Intrinsic stable isotope tracers of environmental contaminants N1 - R825420 ER - TY - CONF A1 - Macko, S A A1 - Kennicutt, M C T1 - Tracing environmental contaminants using stable isotopic signatures N1 - R825420 ER -