"The material used in this publication previously appeared in Crystal identifier by Peter Darling, Collecting gems & minerals by Chris Pellant, Gems & precious stones by Cally Hall, The practical geologist by Dougal Dixon, Rocks & minerals by Basil Booth, and Rocks, shells, fossils, minerals & gems edited by Harriet Stewart-Jones"--T.p. verso.
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"The material used in this publication previously appeared in Crystal identifier by Peter Darling, Collecting gems & minerals by Chris Pellant, Gems & precious stones by Cally Hall, The practical geologist by Dougal Dixon, Rocks & minerals by Basil Booth, and Rocks, shells, fossils, minerals & gems edited by Harriet Stewart-Jones"--T.p. verso.
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