Strategic plan for the North American Breeding Bird Survey, 2006-2010 [electronic resource] / prepared in cooperation with Environment Canada's Canadian Wildlife Service and Mexico's National Commission for the Knowledge and Use of Biodiversity.
Mode of access: Internet from th USGS web site. Address as of 7/14/08: http://pubs.usgs.gov/circ/2007/1307/pdf/circ1307.pdf; current access available via PURL.
Note
Title from PDF title screen (viewed on July 5, 2007)
At head of title on HTML title screen: Patuxent Wildlife Research Center.
