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Morrison, Philip.
The approximate nature of physical symmetries [sound recording] / Sixteenth Richtmyer Memorial Lecture of the AAPT, 1958 January 30.
Symmetry (Physics)
Sound recordings lcgft
Lectures lcgft
American Association of Physics Teachers.
American Institute of Physics.
American Institute of Physics. Niels Bohr Library & Archives. One Physics Ellipse, College Park, MD 20740, USA