TY  - BOOK
AU  - Roy, A.E.,
AU  - Clarke, D.,
TI  - Astronomy: Principles and Practice
SN  - 0750309172
U1  - 520 
PY  - 2003///
CY  - U.K.
PB  - Institute of Physics Publishing
N1  - Following book also  have Appendix A1,A2,A2 &A4 from Pg. No. 454 to 456
ER  -