@book{18897,
	author = {Cook, Earl Ferguson,},
	title = {Tufflavas and ignimbrites;},
	publisher = {American Elsevier Pub. Co.,},
	year = {1966.},
	address = {New York,},
	note = {Translation of papers first published as issue 20 of the Trudy of the Volcanological Laboratory of the Academy of Sciences (USSR)}
}