Tucson, Ariz. : National Park Service, Cooperative National Park Resources Studies Unit, School of Renewable Natural Resources, The University of Arizona, [1993]

SML, Stacks, LC Classification >> QH541.15 B54 R48 1993+ Oversize

Davis, Russell

Tucson, Ariz. : National Park Service, Cooperative National Park Resources Studies Unit, School of Renewable Natural Resources, [1992]

SML, Stacks, LC Classification >> QH105 A65 D39 1992+ Oversize

Duncan, Douglas Keith, 1960-

Tucson : Cooperative National Park Resources Studies Unit, School of Renewable Natural Resources, University of Arizona, 1990.

Library Shelving Facility (LSF) >> QL737 R6 D86 1990 + Oversize