TY  - BOOK
AU  - Gregory, R. A.
TI  - The vault of heaven
T2  - University Extension Series
CY  - London
PB  - Methuen
KW  - Astronomy
KW  - Astronomy and Astrophysics Thesaurus
KW  - Astrophysics
KW  - Telescopes
N1  - Donated by Mrs. Bappu
ER  -