McGinnies, W.J.; Shantz, H.L.; McGinnies, W.G. 1991. Changes in vegetation and land use in eastern Colorado: A photographic study, 1904-1986. ARS-85. Washington, DC: U.S. Department of Agriculture, Agricultural Research Service. 180 p.

McGinnies, W.J.; Shantz, H.L.; McGinnies, W.G. 1991. Changes in vegetation and land use in eastern Colorado: A photographic study, 1904-1986. ARS-85. Washington, DC: U.S. Department of Agriculture, Agricultural Research Service. 180 p.

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