Boyer, L. 2008. Providing native plant diversity to the Willamette Valley ecoregion: No-tech, low-tech, and old-tech seed production methods. Native Plants Journal. 9(3): 230-240.
Boyer, L. 2008. Providing native plant diversity to the Willamette Valley ecoregion: No-tech, low-tech, and old-tech seed production methods. Native Plants Journal. 9(3): 230-240.