TY  - BOOK
AU  - GREGORY (Richard)
TI  - Vault of heaven: an introduction to modern astronomy Ed 2
U1  - 520/66 
PY  - 1923///
CY  - London
PB  - Methuen & Co. Ltd.
KW  - Vault
KW  - modern
KW  - introduction
KW  - heaven
KW  - Ed
KW  - astronomy
KW  - 2
ER  -