Comment 1 for bug 152793

The catalog.txt file contains duplicates, for example:

0002165163 1 Amazon.com: Spinner's yarn: Books: Ian Alexander Ross Peebles
0002165163 o-0 Amazon.com: Spinner's yarn: Books: Ian Alexander Ross Peebles
0002165171 1 Amazon.com: Memoirs: Books: Jean Monnet
0002165171 o-0 Amazon.com: Memoirs: Books: Jean Monnet
000216518X 1 Amazon.com: Media Mob: Books: George Melly
000216518X o-0 Amazon.com: Media Mob: Books: George Melly
000216521X 1 Amazon.com: Old Glory an American Voyage: Books: Johnathan Raban
000216521X o-0 Amazon.com: Old Glory an American Voyage: Books: Johnathan Raban
0002165252 1 404 - Document Not Found
0002165252 o-0 404 - Document Not Found