TY  - RPRT
TI  - Sampling considerations in trace element analysis.
AU  - S Narayanan
AU  - F C Lin
AU  - H J Walder
PY  - 1986
DO  - 10.1111/j.1600-0773.1986.tb02834.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3776633/
ID  - 3776633
ER  -