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  Killing in the Name of Identity: A Study of Bloody Conflicts - Vamik Volkan - Google Books

  https://books.google.de/books?id=9AyeCwAAQBAJ&pg=PT124

  "Why do they hate us so?" Vamik Volkan has the most compelling, humane, and universal response to the riddle of our time. In this extraordinary and timely book, Volkan explains better than anyone the relationship between large-group identities and massive…

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  The Quarterly Journal of the Geological Society of London - Google Books

  https://books.google.de/books?id=3F3zAAAAMAAJ&pg=PA456&dq=The+Constitution+of+the+Earth+oldham#v=onepage

  Vols. 1-108 include Proceedings of the society (separately paged, beginning with v. 30)

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  Category:Igneous rocks – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Igneous_rocks?uselang=de

  Keine Beschreibung vorhanden.

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  Category:Volcanic rocks – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Volcanic_rocks?uselang=de

  Keine Beschreibung vorhanden.

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