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