What does bbtu stand for?
bbtu stands for "Billion British Thermal Unit"
How to abbreviate "Billion British Thermal Unit"?
"Billion British Thermal Unit" can be abbreviated as bbtu
What is the meaning of bbtu abbreviation?
The meaning of bbtu abbreviation is "Billion British Thermal Unit"
What does bbtu mean?
bbtu as abbreviation means "Billion British Thermal Unit"
