TY  - BOOK
AU  - Smith,Elske P.
AU  - Jacobs,Kenneth C.jtauthor
TI  - Introductory astronomy and astrophysic
SN  - 0721683878
PY  - 1973///
CY  - Philadelphia
PB  - Saunders
KW  - Astronomy
KW  - Astrophysics
N1  - Includes bibliographies; Open access
ER  -