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  1. American pronghorn antelope in the Yellow Water Triangle, Montana : a study of social distribution, population dynamics, and habitat use /
    By: Pyrah, Duane B.
    Publication info: [Helena, MT] :Wildlife Division, Montana Dept. of Fish, Wildlife, and Parks in cooperation with Bureau of Land Management, U.S. Dept. of the Interior, Billings, MT,1987.
    Contributed by: Montana State Library (archive.org)
    Subjects: Fergus County  Mammals  Montana  Petroleum County  Pronghorn  
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  2. Roadside bird counts on BLM lands in Petroleum and Fergus counties, Montana / submitted by Paul Hendricks; a report to Bureau of Land Management, Lewistown Field Office.
    By: Hendricks, P. - Montana Natural Heritage Program. - United States.
    Publication info: Helena, Mont. :Montana Natural Heritage Program,c2000.
    Contributed by: Montana State Library (archive.org)
    Subjects: Baird's sparrow  Bird surveys  Birds  Brewer's sparrow  Brown-headed cowbird  Counting  Fergus County  Geographical distribution  Grasshopper sparrow  Grassland birds  Lark bunting  Long-billed curlew  Montana  Musselshell River (Mont.)  Petroleum County  Ponderosa pine  Roadside transect  Sage thrasher  Sagebrush  Savannah sparrow  Short-eared owl  Sprague's pipit  Upland sandpiper  Vesper sparrow  Western meadowlark  
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