Paper presented at a conference sponsored by Pennsylvania State University, College of Arts and Architecture and College of Business Administration in cooperation with the National Endowment for the Arts. Held at Pennsylvania State University, College Park, Pennsylvania, April 29--May 1, 1976. Includes highlights of the discussion following presentation of the paper.

Paper presented at a conference sponsored by Pennsylvania State University, College of Arts and Architecture and College of Business Administration in cooperation with the National Endowment for the Arts. Held at Pennsylvania State University, College Park, Pennsylvania, April 29--May 1, 1976.