TY  - BOOK
AU  - DAVID H. LEVY
TI  - DAVID LEVY'S GUIDE TO OBSERVING AND DISCONERING COMETS
SN  - 052182656X
U1  - 523.6/LEV/DAV 
PY  - 2003///
CY  - NEW DELHI
PB  - CAMBRIDGE UNIVERSITY PRESS
KW  - ASTRONOMY
KW  - CELESTICAL BODIES AND PHENOMENA
ER  -