Society of Photo-optical Instrumentation Engineers 6,031 Society of Photo-Optical Instrumentation Engineers 3,227 IEEE Xplore (Online service) 2,015 North Atlantic Treaty Organization Scientific Affairs Division 1,796 Institute of Electrical and Electronics Engineers 1,535 IEEE Computer Society 948 American Society of Mechanical Engineers Winter Annual Meeting 818 Unesco 811 National Science Foundation (U.S.) 719 New York Academy of Sciences 619 Food and Agriculture Organization of the United Nations 617 International Labour Office 610 International Atomic Energy Agency 609 American Society of Mechanical Engineers Winter Meeting 595 American Chemical Society Meeting 583 United States National Aeronautics and Space Administration 573 Organisation for Economic Co-operation and Development 544 Centre national de la recherche scientifique (France) 534 World Health Organization 484 Commission of the European Communities 450 American Society of Mechanical Engineers 420 American Society of Mechanical Engineers Heat Transfer Division 418 Council of Europe 410 American Society of Mechanical Engineers Pressure Vessels and Piping Division 397 IEEE Electron Devices Society 374 International Federation of Automatic Control 356 United States National Bureau of Standards 326 European Physical Society 323 American Society of Mechanical Engineers Fluids Engineering Division 321 Ciba Foundation 314 see all ...