Jacqui Huntley. Northern England A review of wood and charcoal recovered from archaeological excavations in northern England. Research Department Report Series 68-2010. English Heritage. « Lire en ligne »(Archive.org • Wikiwix • Archive.is • Google • Que faire ?)
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Jacqui Huntley. Northern England A review of wood and charcoal recovered from archaeological excavations in northern England. Research Department Report Series 68-2010. English Heritage. « Lire en ligne »(Archive.org • Wikiwix • Archive.is • Google • Que faire ?)
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(en) Patti Polk, Collecting Rocks, Gems and Minerals : Identification, Values and Lapidary Uses, Penguin, (ISBN978-1-4402-4619-7, lire en ligne)
Jacqui Huntley. Northern England A review of wood and charcoal recovered from archaeological excavations in northern England. Research Department Report Series 68-2010. English Heritage. « Lire en ligne »(Archive.org • Wikiwix • Archive.is • Google • Que faire ?)
(en) George Mustoe et Marisa Acosta, « Origin of Petrified Wood Color », Geosciences, vol. 6, no 2, , p. 25 (DOI10.3390/geosciences6020025, lire en ligne, consulté le )
Jacqui Huntley. Northern England A review of wood and charcoal recovered from archaeological excavations in northern England. Research Department Report Series 68-2010. English Heritage. « Lire en ligne »(Archive.org • Wikiwix • Archive.is • Google • Que faire ?)
Jacqui Huntley. Northern England A review of wood and charcoal recovered from archaeological excavations in northern England. Research Department Report Series 68-2010. English Heritage. « Lire en ligne »(Archive.org • Wikiwix • Archive.is • Google • Que faire ?)
