TY  - RPRT
TI  - Digital mineral resource maps of phosphate and natural aggregate for the Pacific Northwest: A contribution to the Interior Columbia River Basin Ecosystem Management Project
AU  - Arthur A. Bookstrom
AU  - Gary L. Raines
AU  - Bruce R. Johnson
PY  - 1995
DO  - 10.3133/ofr95681
UR  - https://pubs.usgs.gov/publication/ofr95681
ID  - ofr95681
ER  -