TY  - BOOK
AU  - Abell,George O.
AU  - Morrison,David et al 
TI  - Exploration of the universe: 1993 version
SN  - 0030946662
AV  - QB631.A2.c1991 
PY  - 1991///
CY  - Orlando,Florida
PB  - Saunders College publ.
KW  - The universe
KW  - Astronomy
ER  -