Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(14)01137-0
Volcanoes	free resource	MedlinePlus Health Information	https://medlineplus.gov/volcanoes.html
Full text from	free resource	CORE	https://core.ac.uk/reader/53297442?utm_source=linkout