[Koha] What to use, UNIMARC or MARC21 ?

[Zeno Tajoli]

Hi

>Next on the list is the catalog.  L4U exports in MARC format which should be easy enough to import, however, during koha config, I had >to choose between UNIMARC or MARC21. 

do you live in the USA and do you use this L4U: 
http://srbeducationsolutions.com/Library-Management.php ?

If yes, 99% your marc export is MARC21, so select MARC21 on Koha setup.
Quite often in USA you can do the equivalence marc = MARC21.
It is not correct but ask to a librarian to have a complete answer.
You can find an intro here: http://www.loc.gov/marc/umb/

If you want to be 100% sure open the export file with this editor, MarcEdit:
http://marcedit.reeset.net/

If every record has a 008, you have MARC21 records.

Bye
Zeno Tajoli