TY  - BOOK
AU  - Bless, R. C.
TI  - Discovering the cosmos
SN  - 0-935702-67-9
PY  - 1996///
CY  - Sausalito
PB  - University Science
KW  - Astronomy
KW  - Astronomy--History
KW  - Astronomy--Problems, exercises
KW  - Cosmology
KW  - Cosmology--History
ER  -