@book {,
	title = {Pyroclastic rocks},
	year = {1984},
	note = {R.V. Fisher, H.-U. Schmincke.ill. ; 25 cm.Includes indexes.},
	pages = {xiv, 472 p.},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Berlin ; New York},
	keywords = {etc., tuff, Volcanic ash},
	isbn = {0387127569 (U.S.)},
	author = {Fisher, Richard V. and Schmincke, Hans-Ulrich}
}