Cite
MLA Citation
Lee Andrew Groat and David Turner. Geology and mineralogy of gemstones. Washington, D.C : American Geophysical Union, 2020. http://access.bl.uk/ark:/81055/vdc_100140103789.0x000001
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Lee Andrew Groat and David Turner. Geology and mineralogy of gemstones. Washington, D.C : American Geophysical Union, 2020. http://access.bl.uk/ark:/81055/vdc_100140103789.0x000001