TY  - RPRT
TI  - A survey of Pb, Cu, Zn, Cd, Cr, As, and Se in earthworms and soil from diverse sites
AU  - W. N. Beyer
AU  - E.J. Cromartie
PY  - 1987
DO  - 10.1007/bf00396605
UR  - https://pubs.usgs.gov/publication/5222217
ID  - 5222217
ER  -