What does OP stand for?
OP stands for "Observatoire de Paris"
How to abbreviate "Observatoire de Paris"?
"Observatoire de Paris" can be abbreviated as OP
What is the meaning of OP abbreviation?
The meaning of OP abbreviation is "Observatoire de Paris"
What does OP mean?
OP as abbreviation means "Observatoire de Paris"
