TY  - RPRT
TI  - Comparative dietary toxicities of pesticides to birds
AU  - Robert G. Heath
AU  - James W. Spann
AU  - Elwood F. Hill
AU  - James F. Kreitzer
PY  - 1972
UR  - https://pubs.usgs.gov/publication/ssrw152
ID  - ssrw152
ER  -