What does PTN stand for?
PTN stands for "Pozzolanic Technical Notes"
How to abbreviate "Pozzolanic Technical Notes"?
"Pozzolanic Technical Notes" can be abbreviated as PTN
What is the meaning of PTN abbreviation?
The meaning of PTN abbreviation is "Pozzolanic Technical Notes"
What does PTN mean?
PTN as abbreviation means "Pozzolanic Technical Notes"
