TY  - BOOK
AU  - Roy,A.E.
AU  - Clarke,D.
TI  - Astronomy, principles and practice
SN  - 0852744633
AV  - QB43.2 .R68 1982
U1  - 520 19
PY  - 1982///
CY  - Bristol
PB  - A. Hilger
KW  - Astronomy
N1  - Includes index; Bibliography: p. 332-333
ER  -