Wood, D.M.; Del Moral, R. 1988. Colonizing plants on the Pumice Plains, Mount St. Helens, Washington. American Journal of Botany. 75(8): 1228-1237.

Wood, D.M.; Del Moral, R. 1988. Colonizing plants on the Pumice Plains, Mount St. Helens, Washington. American Journal of Botany. 75(8): 1228-1237.

Wood, D.M.; Del Moral, R. 1988. Colonizing plants on the Pumice Plains, Mount St. Helens, Washington. American Journal of Botany. 75(8): 1228-1237.

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