@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} }