What does OBPA stand for?
OBPA stands for "Ounces Back Pressure to Atmosphere"
How to abbreviate "Ounces Back Pressure to Atmosphere"?
"Ounces Back Pressure to Atmosphere" can be abbreviated as OBPA
What is the meaning of OBPA abbreviation?
The meaning of OBPA abbreviation is "Ounces Back Pressure to Atmosphere"
What does OBPA mean?
OBPA as abbreviation means "Ounces Back Pressure to Atmosphere"
