Directory of American research and technology, 1994 : organizations active in product development for business / The 28th ed. of the "Directory of American research and technology : organizations active in product development for business" was prepared by R. R. Bowker's Database Publishing Group. Research, Industrial Laboratories. United States Research Directories. United States 001.4 DIR Includes index. New Jersey : R. R. Bowker, 1993. 1993. 1993 Text xi, 820 p. ; eng United States United States