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Problem DepartmentV. Thebault, C. E. Springer, Nelson Robinson, Richard K. Thomas, Howard D. Grossman, V. C. Bailey, W. B. Clarke, D. L. MacKay, Paul D. Thomas, E. P. Starke, W. N. Huff, Frank Hawthorne, John Bristow, J. Ernest Wilkins, Jr., H. Jones, K. J. Nielsen, N. A. Court and Daniel Arany · National Mathematics Magazine · 1943