Mean Deviation (book)

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Mean Deviation: Four Decades of Progressive Heavy Metal
Mean Deviation book cover.jpg
Author Jeff Wagner
Illustrator Michel Langevin
Cover artist Michel Langevin
Country United States
Language English
Subject Heavy metal music, progressive rock
Publisher Bazillion Points
Publication date
December 2010
Media type Paperback
Pages 364
ISBN 978-0-9796163-3-4
OCLC 624415373
LC Class ML3534.W25 2010

Mean Deviation: Four Decades of Progressive Heavy Metal is a non-fiction book written by former Metal Maniacs magazine editor Jeff Wagner. The book was illustrated by Voivod drummer Michel "Away" Langevin and has a foreword by Porcupine Tree frontman Steven Wilson.[1] Mean Deviation was published in December 2010 by Bazillion Points under supervision of Ian Christe.[2]


  1. ^ "Voivod, Porcupine Tree members contribute to 'Mean Deviation' book". August 17, 2010. Archived from the original on January 4, 2011. Retrieved January 17, 2012. 
  2. ^ Bowar, Chad. "Mean Deviation book review". Retrieved January 17, 2012. 

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