Mineral resources of the Southern Otay Mountain and Western Otay Mountain Wilderness Study Areas, San Diego County, California / by Victoria R. Todd ... [et al.] (Mineral resources of wilderness study areas--Southern California and California desert conservation areas ; ch. E) (U.S. Geological Survey bulletin ; 1711-E)
Mineral resources of the Southern Otay Mountain and Western Otay Mountain Wilderness Study Areas, San Diego County, California / by Victoria R. Todd ... [et al.]
(Mineral resources of wilderness study areas--Southern California and California desert conservation areas ; ch. E) (U.S. Geological Survey bulletin ; 1711-E)