East Lansing: Department of Communication, Michigan State University, 1966. First Edition. Quarto (28cm.); original green spiral-bound decorative wrappers; ,viii,108 typescript leaves; illus. Wrappers worn from handing, very occasional marginal notes by previous owner, else About Very Good. "Diffusion of Innovations Research Report" no. 5. OCLC locates 4 copies in North America as of March, 2015, at Cornell, Michigan State, Oregon, and Wisconsin.