text: * C: Frank Wigglesworth Clarke of USGS and Henry Stephens Washington
  </references>
  * U: United States Geological Survey (USGS)
  </references>
  * B: 
  </references>
  * F: Alexander Fersman
  </references>
  * G: Victor Goldschmidt
  </references>
  * M: Brian Mason
  </references>
  * K: 
  </references>
  * H: Research on the history of chemistry
  </references>