TY  - RPRT
TI  - Lethal dietary toxicities of environmental pollutants to birds.
AU  - Elwood F. Hill
AU  - Robert G. Heath
AU  - James W. Spawn
AU  - Joseph D. Williams
PY  - 1975
UR  - https://pubs.usgs.gov/publication/ssrw191
ID  - ssrw191
ER  -