Flammulated, boreal, and great gray owls in the United States : a technical conservation assessment /Publisher: Fort Collins, CO : Rocky Mountain Region, USDA Forest Service, Rocky Mountain Region, USDA Forest Service,
Date: [1994] This title can be found in 1 Iowa libraries.
Flammulated, Boreal, and Great Gray owls in the United States: a technical conservation assessment /Publisher: Lakewood, CO : The Region,
Date: 1993. This title can be found in 2 Iowa libraries.
Great gray owl : Strix nebulosa /Author: Bull, Evelyn L.
Publisher: Washington, D.C. : American Ornithologists' Union ;
Date: 1993. This title can be found in 1 Iowa libraries.
Ecology of the great gray owlFormat: [electronic resource] /
Author: Bull, Evelyn L.
Publisher: [Portland Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station,
Date: [1990] This title can be found in 1 Iowa libraries.
The great grey owlFormat: [motion picture].
Publisher: [New Brunswick, N.J.?] : BFA Films & Video,
Date: c1986. This title can be found in 1 Iowa libraries.
The great gray owl : phantom of the northern forest /Author: Nero, Robert W.
Publisher: Washington, D.C. : Smithsonian Institution Press,
Date: c1980. This title can be found in 6 Iowa libraries.
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