[sponsored by] Society of Plastics Engineers. sponsored by Society of Explosives Engineers. sponsored by Society of Manufacturing Engineers. Automotive Society of Plastics Engineers. Society of Plastics Engineers. sponsored by the Japan Society of Mechanical Engineers. sponsored by Western Sections, Society of Plastics Engineers, Inc. sponsored by the Institute of Marine Engineers. sponsored by American Society of Mechanical Engineers, etc. sponsored by the Society of Automotive Engineers ... [et al.]