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The range-wide population of Peninsular bighorn was estimated at 1,171 in 1974, before declining to less than 300 adult sheep by 1996.
Geomorphic floristic provinces -- Peninsular ranges and Colorado Desert -- Mojave Desert -- Eastern transverse ranges and the San Bernardino Mountains -- Basin and range province : Death and Owens ...
In the newest addition to The Geological Society of America's memoir series, editors Douglas M. Morton and Fred K. Miller of the U.S. Geological Survey have brought together 24 well-illustrated ...