TY  - RPRT
TI  - Geochemistry of natural gas manifestions from the Upper Tiber Valley (central Italy)
AU  - O. Vaselli
AU  - F. Tassi
AU  - A. Minissale
AU  - B. Capaccioni
AU  - G. Macro
AU  - William C. Evans
PY  - 1997
UR  - https://pubs.usgs.gov/publication/70019525
ID  - 70019525
ER  -