TY  - RPRT
TI  - Map showing structure contours on the top of the upper Jurassic Morrison Formation, Powder River basin, Wyoming and Montana
AU  - B.L. Crysdale
PY  - 1991
DO  - 10.3133/mf2140c
UR  - https://pubs.usgs.gov/publication/mf2140C
ID  - mf2140C
ER  -