TY  - RPRT
TI  - Comparison of radiogenic helium and lead in zircon
AU  - Patrick M. Hurley
AU  - Esper S. Larsen
AU  - David Gottfried
PY  - 1954
DO  - 10.3133/tei475
UR  - https://pubs.usgs.gov/publication/tei475
ID  - tei475
ER  -