Lee Siebert and Paul Kimberly are volcanologists affiliated with the Smithsonian's Global Volcanism Program; Siebert is the GVP's Director. Tom Simkin (1933--2009), served as GVP founder and director from 1968--1995 in a distinguished career in volcanology that spanned more than four decades.
"Highly recommended." -- C. L. Hebblethwaite Choice "This book is the book to have if volcanoes are your thing... A useful addition in any scientific library." -- Helen Ashton Emerald Journal