TY  - RPRT
TI  - Summary of the research work of the Trace Elements Section, Geochemistry and Petrology Branch for the period October 1-December 31, 1951
PY  - 1952
DO  - 10.3133/tei218
UR  - https://pubs.usgs.gov/publication/tei218
ID  - tei218
ER  -