TY  - BOOK
AU  - Lena, P, et al.
TI  - Observational astrophysics
SN  - 9783540634829
U1  - 523.01  LEN-O2 
PY  - 1998///
CY  - Springer-Verlag, Berlin
KW  - Astrophysics; Descriptive astronomy
ER  -