What does RIS stand for?
RIS stands for "Rechnen in Symbolen"
How to abbreviate "Rechnen in Symbolen"?
"Rechnen in Symbolen" can be abbreviated as RIS
What is the meaning of RIS abbreviation?
The meaning of RIS abbreviation is "Rechnen in Symbolen"
What does RIS mean?
RIS as abbreviation means "Rechnen in Symbolen"
