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Max-Planck-Institut für Physik und Astrophysik (1958-1991)(5)
Harper and Brothers (1825-)(2)
Louisiana State University (New Orleans, La.). Department of Physics(2)
Max-Planck-Institut für Physik (1946-1958)(2)
Symposium on the Development of the Physicist's Conception of Nature in the 20. Century (1972 : Triest) (1972-)(2)