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Kapit s a, P. L. (Petr Leonidovich), 1894-1984.
Letters to mother : the early Cambridge period / edited by David J. Lockwood ; translated by Eugenia Lockwood.
Kapit s a, P. L. (Petr Leonidovich), 1894-1984.
Kapit s a, P. L. (Petr Leonidovich), 1894-1984 -- Correspondence.
Kapit s a, O. I. -- Correspondence.
Rutherford, Ernest, 1871-1937.
University of Cambridge.
Physicists -- Soviet Union -- Correspondence.
Lockwood, David J.
National Research Council of Canada.
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