What does PNA stand for?
PNA stands for "Post Newtonian Approximation"
How to abbreviate "Post Newtonian Approximation"?
"Post Newtonian Approximation" can be abbreviated as PNA
What is the meaning of PNA abbreviation?
The meaning of PNA abbreviation is "Post Newtonian Approximation"
What does PNA mean?
PNA as abbreviation means "Post Newtonian Approximation"
