TY  - BOOK
AU  - Murdin, P., ed.                                             
TI  - Encyclopedia of astronomy and astrophysics: vol. 2, Gem - N
SN  - 0-333-75088-8
PY  - 2001///
CY  - Bristol
PB  - Institute of Physics
KW  - astronomy
KW  - astrophysics
KW  - encyclopedia
ER  -