TY  - BOOK
AU  - Arny,Thomas T.
TI  - Explorations: an introduction to astronomy
SN  - 0073025801
U1  - 520 
PY  - 2006///
CY  - Boston
PB  - McGraw-Hill
KW  - ASTRONOMIA
N1  - índice, apéndice, glosario, il
ER  -