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Max-Planck-Institut für Physik und Astrophysik (1958-1991)(1)
National Academy of Sciences (Washington, DC) (1863-)(1)
Princeton University (1896-)(1)
Smithonian Institute (Washington)(1)
Symposium Commemorating the Five Hundredth Anniversary of the Birth of Nicolaus Copernicus (1973 : Washington, DC) (1973-)(1)