We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleInvestigation of folic acid requirements in pregnancy.AuthorsWilloughby, M. L.; Jewell, F. J.PublicationBMJ, 1966, Vol 2, Issue 5529, p1568ISSN0959-8138Publication typearticleDOI10.1136/bmj.2.5529.1568