Cite
HARVARD Citation
Groat, L. et al. (2020) Geology and mineralogy of gemstones. [Online]. Washington, D.C : American Geophysical Union. Available from: http://access.bl.uk/ark:/81055/vdc_100140103789.0x000001
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Groat, L. et al. (2020) Geology and mineralogy of gemstones. [Online]. Washington, D.C : American Geophysical Union. Available from: http://access.bl.uk/ark:/81055/vdc_100140103789.0x000001