TY  - BOOK
AU  - Hubble, Edwin
TI  - The Realm of the Nebulae 
SN  - 978-0-300-18712-0
U1  - 523.113.5 
PY  - 2013///
CY  - London 
PB  - Yale University Press
KW  - NEBULAEÌ
N1  - Introduction - The Exploration of Space - Family Traits of Nebulae - The Distribution of Nebulae - Distances of Nebulae - The Velocity-Distance Relation - The Local Group - The General Field - The Realm of the Nebulae
ER  -