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Federal
[Waubay National Wildlife Refuge: Aerial Photograph Series, 1952-1996]
Department of the Interior —
This series consists of 43 oblique aerial photographs from Waubay National Wildlife Refuge showing water levels, habitat conditions, and development in various refuge... -
Federal
Baca National Wildlife Refuge and Great Sand Dunes Vegetation Mapping Project
Department of the Interior —
This vegetation classification and mapping effort encompasses 167,148 ha(413,031 acres ) within the San Luis Valley, west of the Sangre de Cristo Mountains in south...