Exposure Assessment Group (Dec 1993). Wildlife Exposure Factors Handbook(PDF). Vol. 1. Washington DC: US Environmental Protection Agency. pp. 2–443. Archived from the original(PDF) on 2003-09-18.
Exposure Assessment Group (Dec 1993). Wildlife Exposure Factors Handbook(PDF). Vol. 1. Washington DC: US Environmental Protection Agency. pp. 2–443. Archived from the original(PDF) on 2003-09-18.