What does PDO stand for?

PDO stands for "Publications of the Dominion Observatory Ottawa"

How to abbreviate "Publications of the Dominion Observatory Ottawa"?

"Publications of the Dominion Observatory Ottawa" can be abbreviated as PDO

What is the meaning of PDO abbreviation?

The meaning of PDO abbreviation is "Publications of the Dominion Observatory Ottawa"

What does PDO mean?

PDO as abbreviation means "Publications of the Dominion Observatory Ottawa"