@misc{indiciae9e13bb0eac00,
  title = {Lead-uranium ratio of siliceous pitchblende from Great Bear Lake, N. W. T., Canada, and its possible age},
  author = {J. P. Marble},
  year = {2002},
  doi = {10.1021/ja01294a014},
  url = {https://pubs.usgs.gov/publication/70010855},
  note = {Source identifier: 70010855}
}