Hi Alexandru: Someone may have already answered your question, but I'll offer some advice in the event that they haven't. 1) Consult the Library of Congress as your guide: http://www.loc.gov/marc/bibliographic/. If you're unsure of what you read there, consult someone well-versed in MARC21 and descriptive cataloguing standards (such as AACR2 or RDA). 2) "Duplicate" or rather "repeatable" fields are not a problem for MARC21, if the field is marked as (R) in the relevant section of the website I mentioned above. In the case of 7xx fields, it is very common to have multiple entries (since they're "added" entries). 3) In fact, by concatenating multiple 7xx author entries into one single 100, you will be creating a problem. The 100 field is a main entry field. It should only ever have one author in it. 4) Depending on your data, you might not actually have or need a 100 field in a record. With that established, why are you considering "duplicate" fields do be a problem? I'm not familiar with ISIS's export format(s). Are you using a CSV dump and then using the "Delimited Text Translator" tool in MarcEdit? David Cook Systems Librarian Prosentient Systems P/L ABN 31 078 409 168 72/330 Wattle St, Ultimo NSW 2007 tel: 02 92120899 fax: 02 92120885 dcook@prosentient.com.au -----Original Message----- Date: Mon, 13 May 2013 13:29:52 +0300 From: Alexandru Constantin <upb.alexander@gmail.com> To: koha@lists.katipo.co.nz Subject: [Koha] CDS/ISIS to MARC21 (Koha) issue Message-ID: <CAKyhb_eRt-29N0YQRpykjb_pyTiiBnd4b15W8Qo2ZsOvbKx3Ew@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Dear colleagues, I'm trying to convert (using MARCEdit) my approx. 10 000 entry ISIS database to MARC21 for import in Koha. I'm encountering the following problem: Some of the tags for each book are duplicate; for example, for multiple authors, the record will look smth like this: ... =702 John =702 Mary =702 Ann ... I would like to merge this fields into the MARC21 100 field like this: ... =100 \\$a John, Mary, Ann ... Unique fields haven't posed problems, but those duplicates do. I would really appreciate some help. Best regards ^_^, -- Alexandru Constantin Student Computer Science @ University Politehnica of Bucharest http://crasheralex.me ------------------------------ _______________________________________________ Koha mailing list Koha@lists.katipo.co.nz http://lists.katipo.co.nz/mailman/listinfo/koha