TY - RPRT TI - Organochlorine pollutants and stable isotopes in resident and migrant passerine birds from northwest Michoacán, Mexico AU - Miguel A. Mora PY - 2008 DO - 10.1007/s00244-007-9124-z UR - https://pubs.usgs.gov/publication/70000038 ID - 70000038 ER -