What does usg stand for?
usg stands for "Unconventional Shale Gas"
How to abbreviate "Unconventional Shale Gas"?
"Unconventional Shale Gas" can be abbreviated as usg
What is the meaning of usg abbreviation?
The meaning of usg abbreviation is "Unconventional Shale Gas"
What does usg mean?
usg as abbreviation means "Unconventional Shale Gas"
