Theory of excitons. Knox, Robert S. (Robert Seiple), 1931- Exciton theory. QC176 .K58 1963 533.41 KNT Bibliographical footnotes. New York, Academic Press, 1963. 1963. 1963 Text vii, 207 p. eng Solid state physics; advances in research and applications. Supplement 5 Solid state physics. Supplement ; 5.