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== Bibliografia ==
* {{en}} McGraw, K. J. 2005. [http://www.public.asu.edu/~kjmcgraw/pubs/ABK2005.pdf Polly want a pigment? Cracking the chemical code to red coloration in parrots.] Australian Birdkeeper Magazine 18:608-611.
* {{en}} DeMeo, Antonia M., [
* {{en}} Electronic Code of Federal Regulations (e-CFR), [https://web.archive.org/web/20070610034613/http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&tpl=%2Fecfrbrowse%2FTitle50%2F50cfr22_main_02.tpl ''Title 50: Wildlife and Fisheries PART 22—EAGLE PERMITS'']
* {{en}} Stokes, DaShanne. (In Press) {{Collegamento interrotto|1=[http://www.geocities.com/eaglefeatherlaw/stokes.article.html ''Legalized Segregation and the Denial of Religious Freedom''] |date=maggio 2019 |bot=InternetArchiveBot }}
* {{en}} [
== Voci correlate ==
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