Mineral resources of the Gibraltar Mountain and Planet Peak wilderness study areas, La Paz County, Arizona / by Robert G. Eppinger ... [et al.] (Mineral resources of wilderness study areas--Havasu region, Arizona ; ch. B) (U.S. Geological Survey bulletin ; 1704-B) (Studies related to wilderness--Bureau of Land Management wilderness study areas)
Mineral resources of the Gibraltar Mountain and Planet Peak wilderness study areas, La Paz County, Arizona / by Robert G. Eppinger ... [et al.]
(Mineral resources of wilderness study areas--Havasu region, Arizona ; ch. B) (U.S. Geological Survey bulletin ; 1704-B) (Studies related to wilderness--Bureau of Land Management wilderness study areas)