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Celebrating 50 Years 1950—2000



This poster is produced and distributed by the National Science Foundation. Duplication of the
information and activities on its reverse side is encouraged. Please address all inquiries to NSTW, Room 1245,
National Science Foundation, 4201 Wilson Blvd., Arlington, VA 22230; E-mail NSTW at;
or go to the NSTW web site.