Ecological responses at Mount St. Helens : revisited 35 years after the 1980 eruption. New York, NY : Springer, [2018]. ©2018. 1 online zdroj (xv, 336 stran). Dostupné na internetu: <https://ebookcentral.proquest.com/lib/ujep-ebooks/detail.action?docID=5254264> ISBN 978-1-4939-7451-1.