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2. Tranel MA, Kimmel RO (2009) Impacts of lead ammunition on wildlife, the environment, and human health - A literature review and implications for Minnesota. Proceedings of the Ingestion of Spent Ammunition: Implications for Wildlife and Humans Conference Pgs 318–337.
3. Carcasses of shot Richardson’s ground squirrels may pose lead hazards to scavenging hawks;L Knopper;J of Wildl Mangmt,2006
4. Recreational shooting of prairie dogs: a portal for lead entering wildlife food chains;JN Pauli;J of Wildl Mangmt,2007
5. Bullet fragments in deer remains: implications for lead exposure in avian scavengers;WG Hunt;Wildl Society Bull,2005