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Are you all aware of this publication? Its free and can be down-loaded at......
http://www.earthheritage.org.uk/ehpdf/eh35LR.pdf
John
“Civilisation exists by geological consent, subject to change without notice.” - Will Durant
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Earth Heritage e-magazine
Submitted by John on Tue, 07/23/2013 - 21:34.Are you all aware of this publication? Its free and can be down-loaded at......
http://www.earthheritage.org.uk/ehpdf/eh35LR.pdf
John
John
“Civilisation exists by geological consent, subject to change without notice.” - Will Durant