What does HB stand for?
HB stands for "Horizontal Bridgman"
How to abbreviate "Horizontal Bridgman"?
"Horizontal Bridgman" can be abbreviated as HB
What is the meaning of HB abbreviation?
The meaning of HB abbreviation is "Horizontal Bridgman"
What does HB mean?
HB as abbreviation means "Horizontal Bridgman"
