Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleSupplementary Methods in Family Research.AuthorsLEVINGER, GEORGEPublicationFamily Process, 1963, Vol 2, Issue 2, p357ISSN0014-7370Publication typeArticleDOI10.1111/j.1545-5300.1963.00357.x