Pyroclastic particle sizes data source information

Primary source:

Wolfram|Alpha Knowledgebase, 2021.

Background sources and references:

  • Glover, T. J. Pocket Ref. (3rd ed.) Sequoia Publishing, 2007.
  • Kipfer, B. A. The Order of Things: Hierarchies, Structures, and Pecking Orders. Workman Publishing Company, 2008.
  • The Wikimedia Foundation, Inc. Wikipedia. »

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