TY  - RPRT
TI  - Informal notes; Workshop on the Application of Isotope Systems to Geological Problems
AU  - R. A. convened by Ayuso
AU  - K. J. Schulz
PY  - 1992
DO  - 10.3133/ofr92525
UR  - https://pubs.usgs.gov/publication/ofr92525
ID  - ofr92525
ER  -