American Physical Society. Annual Meeting (1981 : New York, N.Y.)
American Association of Physics Teachers 50th anniversary symposium [sound recording] / 1981 January 28.
Wednesday afternoon - session II.
American Association of Physics Teachers
Sound recordings lcgft
American Association of Physics Teachers.
American Institute of Physics.
American Physical Society
AIP-ICOS
American Institute of Physics. Niels Bohr Library & Archives. One Physics Ellipse, College Park, MD 20740, USA