What does PPD stand for?
PPD stands for "Parts Per Deciliter"
How to abbreviate "Parts Per Deciliter"?
"Parts Per Deciliter" can be abbreviated as PPD
What is the meaning of PPD abbreviation?
The meaning of PPD abbreviation is "Parts Per Deciliter"
What does PPD mean?
PPD as abbreviation means "Parts Per Deciliter"