TY  - RPRT
TI  - Preliminary report on the Molalla high-alumina clay deposit near Molalla, Clackmas County, Oregon
AU  - Robert L. Nichols
PY  - 1944
DO  - 10.3133/ofr4420
UR  - https://pubs.usgs.gov/publication/ofr4420
ID  - ofr4420
ER  -