TY  - RPRT
TI  - The Phosphoria, Park City, and Shedhorn formations in the western phosphate field
AU  - V.E. McKelvey
AU  - James S. Williams
AU  - R. P. Sheldon
AU  - E. R. Cressman
AU  - T. M. Cheney
AU  - R. W. Swanson
PY  - 1959
DO  - 10.3133/pp313a
UR  - https://pubs.usgs.gov/publication/pp313A
ID  - pp313A
ER  -