TY  - RPRT
TI  - A microcomputer program utilizing a stratigraphic coding system for data entry into the National Coal Resources Data System
AU  - B.R. Schachte
AU  - B.S. Pierce
PY  - 1987
DO  - 10.3133/ofr87605
UR  - https://pubs.usgs.gov/publication/ofr87605
ID  - ofr87605
ER  -