TY  - RPRT
TI  - Coalfields of the Republic of Korea, Part 1: Chapters A and B
AU  - David A. Andrews
AU  - Cheong Chang Hi
PY  - 1956
DO  - 10.3133/b1041ab
UR  - https://pubs.usgs.gov/publication/b1041AB
ID  - b1041AB
ER  -