TY  - BOOK
AU  - Evans, David S
TI  - Observation in modern astronomy
SN  - 340-05069-1
PY  - 1968///
CY  - London
PB  - The English Universities Press
KW  - Astronomy
KW  - Astronomy and Astrophysics Thesaurus
KW  - Astrophysics
ER  -