What does OPB stand for?
OPB stands for "Officer Preselection Brief"
How to abbreviate "Officer Preselection Brief"?
"Officer Preselection Brief" can be abbreviated as OPB
What is the meaning of OPB abbreviation?
The meaning of OPB abbreviation is "Officer Preselection Brief"
What does OPB mean?
OPB as abbreviation means "Officer Preselection Brief"
