TY  - RPRT
TI  - Epigenetic sulfide mineralization associated with Pennsylvanian paleokarst in eastern Iowa, U.S.A.
AU  - P.L. Garvin
AU  - Greg A. Ludvigson
PY  - 1993
DO  - 10.1016/0009-2541(93)90131-2
UR  - https://pubs.usgs.gov/publication/70018236
ID  - 70018236
ER  -