3JR means Third Year Junior in Universities
Similar to 3JR
AAIS - American Academy of Independent StudiesAAIS - American Association of Italian Studies
AAIS - Africana and American Indian Studies
AALC - Arizona Andrology Laboratory Cryobank
AALL - African and Asian Languages and Literatures
AAMB - All American Marching Band
AAMC - Association Of American Medical Colleges
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