Member Directory The AAS maintains a membership directory to facilitate member interaction and to support the conduct of official Society business. Search directory for: Filter Results By Clear Filters Type of Science State (-) IN (1) Facet State City (-) Bloomington (1) Facet City Membership Class Full Member (3) (-) Full Emeritus Member (1) Facet Membership Class Division HEAD (2) (-) DDA (1) Facet Division Showing 1-1 of 1 results Haldan Cohn Full Emeritus Member Affiliation Indiana Univ. State/Province IN Country United States