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April brings a blast of fresh air with diverse new Features and Communications. These include a piece on the use of OpenFOAM software in fluid dynamics, an analysis of the square peg problem, a piece on modern industrial mathematics, a study of how well established undergraduate research is in mathematics, and a discussion of whether libraries and open access are becoming irrelevant. Happy reading! --Steven G. Krantz, Editor
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### Benjamin Matschke

(pp. 346)

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### Goong Chen, Qingang Xiong, Philip J. Morris, Eric G. Paterson, Alexey Sergeev, and Yi-Ching Wang

(pp. 354)

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### C. Sean Bohun

(pp. 364)

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