TY  - BOOK
AU  - Kwok,S.
TI  - Cosmic butterflies: the colorful mysteries of planetary nebulae 
SN  - 0521791359
AV  - QB855.5 .K957 2000
U1  - 523.1/135 21
PY  - 2001///
CY  - Cambridge, New York
PB  - Cambridge University Press
KW  - Planetary nebulae
N1  - Includes bibliographical references (p. [169]-170) and index
UR  - http://www.loc.gov/catdir/description/cam021/00068867.html
UR  - http://www.loc.gov/catdir/toc/cam021/00068867.html
ER  -