Hi Koha people! I have 4 hopefully easy questions about mapping MARC to KohaDB. My library uses 'free form' call numbers, to put it nicely. For example: 420.0101 1 Molinsky/WW Songbook We are a special library for ESL/bilingual/dual language teachers, and were fortunate to have an OCLC retroconversion done with an LSTA grant through our regional library system. We currently have no automation system and are looking forward to getting Koha running soon. Our call #s are in 099 with a repeatable subfield 'a': 099 420.0101 $a 1 Molinsky/WW Songbook 1) Can Koha understand the multiple $a fields and map the first part to biblioitems.classification and the second part to something else? If not, I think I will change the ISO file to subfield $b for the second $a part (and dump the db and re-import it). 2) Where should I map the second part? (Let's assume I changed it to a subfield $b.) To biblioitems.dewey or biblioitems.subclass? How have others used these fields? 3) As you know, biblioitems.dewey is of type double(8,6) and biblioitems.subclass is type char(3). If I use one of these fields, I will have to change the type, probably to varchar(25). Will changing this field type have any effect on other parts of Koha (scripts, displays, calculations, etc.?) 4) My call #s have strange characters like forward slashes, dots, hyphens, and spaces. Will this be a problem? Thanks much for all your help. Kim Scannell