TY  - BOOK
AU  - Weinberger,R.
AU  - Acker,A.
TI  - Planetary Nebulae
SN  - 0-7923-2440-4
PY  - 1993///
CY  - Dordrecht
PB  - Kluwer Academic Publishers
KW  - Astronomía
KW  - nebulosas planetarias
N1  - Proceedings of the 155th Symposium of the International Astronomical Union, held in Innsbruck, Austria, on July 13-17, 1992
ER  -