Cite
MLA Citation
Philip J. Potts et al.. “The GeoPT Proficiency Testing Programme as a Scheme for the Certification of Geological Reference Materials.” Geostandards and geoanalytical research, vol. 43, no. 3, 2019, pp. 409–418. http://access.bl.uk/ark:/81055/vdc_100091263409.0x000017