TY  - BOOK
AU  - lena, Pierre
TI  - Observational astrophysics
SN  - 3-540-18433-3
PY  - 1988///
CY  - Berlin
PB  - Springer-Verlag
KW  - Astronomy and astrophysics thesaurus
KW  - Astrophysics
KW  - Observations
ER  -