TY  - RPRT
TI  - Spectrophotometric determination of traces of lead in igneous rocks
AU  - C. E. Thompson
AU  - H. M. Nakagawa
PY  - 1960
DO  - 10.3133/b1084f
UR  - https://pubs.usgs.gov/publication/b1084F
ID  - b1084F
ER  -