What does PTO stand for?
PTO stands for "Purdue Terrestrial Observatory"
How to abbreviate "Purdue Terrestrial Observatory"?
"Purdue Terrestrial Observatory" can be abbreviated as PTO
What is the meaning of PTO abbreviation?
The meaning of PTO abbreviation is "Purdue Terrestrial Observatory"
What does PTO mean?
PTO as abbreviation means "Purdue Terrestrial Observatory"
