TY  - BOOK
AU  - Irion,Robert
TI  - Galaxies: island universes 
T2  - Out there
SN  - 0762103124
AV  - QB857.I75 
PY  - 2001///
CY  - Pleasantville
PB  - Reader's Digest
KW  - Astronomy
KW  - Density wave theory
KW  - Galaxies
KW  - Space sciences
ER  -