We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleVitamin B-12: plant sources, requirements, and assayAuthorsHerbert, VPublicationThe American Journal of Clinical Nutrition, 1988, Vol 48, Issue 3, p852ISSN0002-9165Publication typearticleDOI10.1093/ajcn/48.3.852