What does ZEF stand for?
ZEF stands for "Zero Effort Feedback"
How to abbreviate "Zero Effort Feedback"?
"Zero Effort Feedback" can be abbreviated as ZEF
What is the meaning of ZEF abbreviation?
The meaning of ZEF abbreviation is "Zero Effort Feedback"
What does ZEF mean?
ZEF as abbreviation means "Zero Effort Feedback"
