TY  - RPRT
TI  - Epochal trace elements and evolution.
AU  - C C Pfeiffer
AU  - E R Braverman
PY  - 1982
DO  - 10.1007/bf01965412
UR  - https://pubmed.ncbi.nlm.nih.gov/7136960/
ID  - 7136960
ER  -