TY  - RPRT
TI  - Chromite and other mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania, and Delaware
AU  - Nancy C. Pearre
AU  - Allen V. Heyl
PY  - 1960
DO  - 10.3133/b1082k
UR  - https://pubs.usgs.gov/publication/b1082K
ID  - b1082K
ER  -