https://catalog.riphah.edu.pk//cgi-bin/koha/opac-search.pl?q=ccl=su%3A%22Comets%22&sort_by=relevance&format=rss 3 0 50 ISBN:9780072465709 (pbk) | 0072465700 (pbk) https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=24458 ]]> By Arny, Thomas T..
Boston McGraw-Hill 2004 .
xix, 586 p. , Includes glossary and index. ; 29 cm..
9780072465709 (pbk) | 0072465700 (pbk)

]]> Place hold on Explorations

]]> https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=24458 ISBN:0521520517 (pbk) https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=26457 ]]> By Levy, David H..
New York Cambridge University Press 2003 .
ix, 177 p. , Includes appendix and index. ; 24.5 cm..
0521520517 (pbk)

]]> Place hold on David Levy's guide to observing and discovering comets

]]> https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=26457 ISBN:0521004667 (pbk) https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=33870 ]]> By Brandt, John C..
New York Cambridge 2004 .
viii, 441 p. , Include index. ; 24.5 cm..
0521004667 (pbk)

]]> Place hold on Introduction to comets

]]> https://catalog.riphah.edu.pk//cgi-bin/koha/opac-detail.pl?biblionumber=33870