TY  - BOOK
AU  - Hynek, J Allen
AU  - Apfel, Necia H.
TI  - Astronomy one
PY  - 1972///
CY  - California
PB  - W. A. Benjamin
KW  - Astronomy
KW  - Astronomy and astrophysics thesaurus
KW  - Astrophysics
ER  -