What does PTR stand for?
PTR stands for "Proliferation Threat Reduction"
How to abbreviate "Proliferation Threat Reduction"?
"Proliferation Threat Reduction" can be abbreviated as PTR
What is the meaning of PTR abbreviation?
The meaning of PTR abbreviation is "Proliferation Threat Reduction"
What does PTR mean?
PTR as abbreviation means "Proliferation Threat Reduction"
