What does BDN stand for?
BDN stands for "Besselian Day Number"
How to abbreviate "Besselian Day Number"?
"Besselian Day Number" can be abbreviated as BDN
What is the meaning of BDN abbreviation?
The meaning of BDN abbreviation is "Besselian Day Number"
What does BDN mean?
BDN as abbreviation means "Besselian Day Number"
