TY  - RPRT
TI  - Special problem caused by the epigenetic alterations of Liassic rocks
AU  - Henry Joly
AU  - Ninck Joly
PY  - 1948
DO  - 10.3133/ofr4817b
UR  - https://pubs.usgs.gov/publication/ofr4817B
ID  - ofr4817B
ER  -