Donald F. Arnold, State University of New York at..., Undated
ua390
Donald F. Arnold, State University of New York at Albany faculty member in the School of Business, writing on a blackboard during a class. There are crop marks on all sides of the original. Written in the top margin is "Photo P P.22 73% of original." Written in the left margin between two arrows is "reduce to 24 pi." Written in the bottom margin between two arrows is "Reduce to 19 pi."