TY  - BOOK
AU  - Bless,Robert C.
TI  - Discovering the cosmos
SN  - 9781891389719 (pbk. : alk. paper)
U1  - 520 
PY  - 2013///
CY  - Mill Valley, Calif.
PB  - University Science Books
KW  - Astronomy
N1  - Includes index
ER  -