1998
Sidle, J.G. et al. 1998. Occurrence of Burrowing Owls in Prairie Dog Towns on Great Plains National Grasslands. Report for USFS Threatened Endangered and Sensitive Species Project, USDA Forest Service, Chadron, NE. 11 p. (www.fs.fed.us/r2/nebraska/gpn
U98SID01NMUS
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