TY  - RPRT
TI  - Biostratigraphy and regional relations of the Mississippian Leadville limestone in the San Juan Mountains, southwestern Colorado
AU  - Augustus K. Armstrong
AU  - Bernard L. Mamet
PY  - 1976
DO  - 10.3133/pp985
UR  - https://pubs.usgs.gov/publication/pp985
ID  - pp985
ER  -