What does hd stand for?
hd stands for "Henry-Draper-Katalog"
How to abbreviate "Henry-Draper-Katalog"?
"Henry-Draper-Katalog" can be abbreviated as hd
What is the meaning of hd abbreviation?
The meaning of hd abbreviation is "Henry-Draper-Katalog"
What does hd mean?
hd as abbreviation means "Henry-Draper-Katalog"
