Cite
APA Citation
Groat, L. A., & Turner, D. (2020). Geology and mineralogy of gemstones. Washington, D.C : American Geophysical Union. http://access.bl.uk/ark:/81055/vdc_100140103789.0x000001
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Groat, L. A., & Turner, D. (2020). Geology and mineralogy of gemstones. Washington, D.C : American Geophysical Union. http://access.bl.uk/ark:/81055/vdc_100140103789.0x000001