What does RR stand for?
RR stands for "ruthenium red-positive"
How to abbreviate "ruthenium red-positive"?
"ruthenium red-positive" can be abbreviated as RR
What is the meaning of RR abbreviation?
The meaning of RR abbreviation is "ruthenium red-positive"
What does RR mean?
RR as abbreviation means "ruthenium red-positive"
