TY  - RPRT
TI  - Changing levels of heavy metal accumulation in birds at Tumacacori National Historic Park along the Upper Santa Cruz River Watershed in southern Arizona
AU  - Charles van Riper
AU  - Michael B. Lester
PY  - 2016
UR  - https://pubs.usgs.gov/publication/70171079
ID  - 70171079
ER  -