TY  - RPRT
TI  - Metalliferous black shales and related ore deposits; proceedings, 1989 United States Working Group meeting, International Geological Correlation Program Project 254
AU  - Richard I. Grauch
AU  - Holly L.O. Huyck
PY  - 1990
DO  - 10.3133/cir1058
UR  - https://pubs.usgs.gov/publication/cir1058
ID  - cir1058
ER  -