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2. Serpentine soil redness, differences among peridotite and serpentinite materials, Klamath Mountains, California;Alexander;Int. Geol. Rev.,2004
3. Soils and vegetation differences from peridotite to serpentinite;Alexander;Northeast. Nat.,2009
4. Old Neogene summer –dry soils with ultramafic parent materials;Alexander;Geoderma,2010
5. Serpentine Geoecology of Western North America;Alexander,2007