Organisation for Economic Co-operation and Development (317)
Round Table on Transport Economics (94)
European Conference of Ministers of Transport (90)
Institute of Medicine (U.S.) (69)
Organisation for Economic Co operation and Development (66)
International Congress of Anthropological and Ethnological Sciences (62)
National Bureau of Economic Research (62)
Nuclear Energy Agency (62)
National Research Council (U.S.) (61)
American Mathematical Society (60)
National Academy of Engineering (49)
Arabnia, Hamid R. (47)
Conférence Européenne des Ministres des Transports (46)
Vincenzini, P. (43)
International Monetary Fund (41)
North Atlantic Treaty Organization. Public Diplomacy Division (36)
Müller-Luckner, Elisabeth (32)
Institute of Medicine (U.S.). Board on Health Sciences Policy (30)
Olsen, Steven (30)
National Academies Press (U.S.) (29)
Ciba Foundation (28)
Institute of Mathematical Statistics (28)
Vereinigung der Deutschen Staatsrechtslehrer. Tagung (28)
European Conference of Ministers of Transport Economic Research Centre (27)
Society for Industrial and Applied Mathematics (27)
World Bank (27)
World Health Organization (27)
American Ceramic Society (26)
International Labour Conference (26)
Zhang, Helen (25)
Alper, Joe (24)
Linguistic Symposium on Romance Languages (24)
Tinetti, Fernando G. (24)
Wessner, Charles W. (23)
World Tourism Organization (23)
Olson, Steve (22)
Solo, Ashu M. G. (22)
Institute of Medicine (U.S.). Forum on Drug Discovery, Development, and Translation (21)
International Conference on Historical Linguistics (21)
International Meeting on Modern Ceramics Technologies (21)
NATO Emerging Security Challenges Division (20)
Transport Research Centre (20)
Zhao, X. J. (20)
International Conference on Advanced Ceramics and Composites (19)
Jin, David (19)
National Academy of Sciences (U.S.) (19)
National Research Council (U.S.). Committee on National Statistics (19)
Wise, David A. (19)
Wizemann, Theresa M. (19)
World Tourism Organization Staff (19)
Deligiannidis, Leonidas (18)
Forum on New Materials (18)
Institute of Medicine (U.S.). Board on Global Health (18)
Jandieri, George (18)
National Cancer Policy Forum (U.S.) (18)
Royal Society of Chemistry (Great Britain) (18)
Symposium on Frontiers of Engineering (18)
Altevogt, Bruce M. (17)
American Institute of Aeronautics and Astronautics (17)
Institute of Medicine (U.S.). Board on Population Health and Public Health Practice (17)
International School of Physics "Enrico Fermi" (17)
National Research Council (U.S.). Board on Science, Technology, and Economic Policy (17)
National Research Council (U.S.). Policy and Global Affairs (17)
Institute of Medicine (U.S.). Food and Nutrition Board (16)
National Research Council (U.S.). Division of Behavioral and Social Sciences and Education (16)
Pleskovic, Boris (16)
Food and Agriculture Organization of the United Nations (15)
Institute of Medicine (U.S.). Forum on Microbial Threats (15)
International Conference on "Smart Materials, Structures, and Systems" (15)
Itō, Takatoshi (15)
NBER-East Asia Seminar on Economics (15)
Neyman, Jerzy (15)
Institute of Medicine (U.S.). Roundtable on Translating Genomic-Based Research for Health (14)
National Academies of Sciences, Engineering, Medicine (14)
Health and Medicine Division (13)
Historisches Kolleg (Munich, Germany) (13)
Institute of Medicine (U.S.). Board on Health Care Services (13)
Stroud, Clare (13)
Comité pour l'histoire économique et financière de la France (12)
International Colloquium on Dynamics of Explosions and Reactive Systems (12)
International Conference on English Historical Linguistics (12)
International Federation of Library Associations and Institutions (12)
Joint FAO/WHO Expert Committee on Food Additives. Meeting (12)
Krueger, Anne O. (12)
Nass, Sharyl J. (12)
National Research Council (U.S.). Chemical Sciences Roundtable (12)
National Research Council (U.S.). Commission on Behavioral and Social Sciences and Education (12)
National Research Council (U.S.). Division on Earth and Life Studies (12)
National Research Council Staff (12)
National Science Foundation (U.S.) (12)
Oberender, Peter (12)
Pray, Leslie A. (12)
Società italiana di fisica (12)
Symposium on Arabic Linguistics (12)
Berger, Adam C. (11)
Colegio de Mexico (11)
Eid, Mushira (11)
Institute of Medicine (U.S.). Forum on Medical and Public Health Preparedness for Catastrophic Events (11)
Institute of Medicine (U.S.). Roundtable on Health Literacy (11)
International Association for Tibetan Studies. Seminar (11)
