TY  - RPRT
TI  - Atomic absorption spectrophotometric determination of microgram levels of Co, Ni, Cu, Pb, and Zn in soil and sediment extracts containing large amounts of Mn and Fe
AU  - T. T. Chao
AU  - R. F. Sanzolone
PY  - 1973
UR  - https://pubs.usgs.gov/publication/70162009
ID  - 70162009
ER  -