TY  - BOOK
AU  - Roy,A.E.
AU  - Clarke,D.
TI  - Astronomy: principles and practice 
SN  - 0750309172 :
U1  -  520 
PY  - 2003///
CY  - New Delhi
PB  - Institute of Physics
KW  - Astronomy
N1  - Includes bibliographical references and index
ER  -