TY  - BOOK
AU  - Seeds,Michael A
AU  - Backman,Dana E.
TI  - Universe: solar system, stars, and galaxies 
SN  - 1111425671
U1  - 520 
PY  - 2012///
CY  - Boston, MA
PB  - Brooks/Cole, Cengage Learning
KW  - Astrofísica
KW  - Astronomía
ER  -