[Koha] marc import

hi everyone, i've got several files of marc records i downloaded from oclc. i would like to do a bulk import, but have been reading about the need to add a 952 subfield. will i need to change something in these oclc records? or can i just do a bulk import? i'm pretty sure they're all sitting in the breeding area right now waiting to be uploaded, (must i do this one at a time?) Christine Forte Psychology Library Director Antioch University Santa Barbara 801 Garden Street Santa Barbara, CA 93101 Phone: 805-966-5615 Fax: 805-962-4786 e-mail: cforte@antiochsb.edu