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79. Modulation Techniques in Spectrometry, Martin Harwit and John Decker, in "Progress in Optics XII," ed. E. Wolf, North Holland, p. 102, (1974)., Box: 21. Martin Harwit papers, 14-7-2402. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/174430 Accessed February 02, 2026.