California Natural History Guides: 10. Early Uses of California Plant, By Edward K. Balls University of California Press, 1962 University of California Press.[1]Arhivat în , la Wayback Machine.
California Natural History Guides: 10. Early Uses of California Plant, By Edward K. Balls University of California Press, 1962 University of California Press.[1]Arhivat în , la Wayback Machine.