[sponsored by] Society of Plastics Engineers. sponsored by Society of Explosives Engineers. sponsored by Society of Manufacturing Engineers. sponsored by the Japan Society of Mechanical Engineers. sponsored by Western Sections, Society of Plastics Engineers, Inc. sponsored by Society of Experimental Mechanics sponsored by American Society of Mechanical Engineers, etc. sponsored by the Western Sections of the Society of Plastics Engineers. sponsored by the Society of Automotive Engineers ... [et al.] sponsored by Central New York Section, Society of Plastics Engineers, Inc.