What does OPR stand for?
OPR stands for "Outer Planets Research"
How to abbreviate "Outer Planets Research"?
"Outer Planets Research" can be abbreviated as OPR
What is the meaning of OPR abbreviation?
The meaning of OPR abbreviation is "Outer Planets Research"
What does OPR mean?
OPR as abbreviation means "Outer Planets Research"
