TY  - BOOK
AU  - Kaufmann,William J.
TI  - Discovering the universe
SN  - 0716720541
U1  - 520 
PY  - 1990///
CY  - New York
PB  - W. H. Freeman
KW  - Astronomy
KW  - Universe
KW  - Cosmology
N1  - Primary; 500-599; 520
ER  -