@misc{indiciae88472f4b4105, title = {Short routine direct method for the fluorimetric determination of uranium in phosphate rocks}, author = {F. S. Grimaldi and Norma S. Guttag}, year = {1950}, doi = {10.3133/tei134}, url = {https://pubs.usgs.gov/publication/tei134}, note = {Source identifier: tei134} }