TY  - BOOK
AU  - Roy, A. E.
AU  - Clarke, D.
TI  - Astronomy: principles and practice
SN  - 0-85274-292-4
PY  - 1977///
CY  - Bristol
PB  - Adam Hilger
KW  - Astronomy
KW  - Astronomy and astrophysics thesaurus
ER  -