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Two new eJAAVSO preprints: EBs in the 21st century; Transiting Exoplanets

(ej203): "Eclipsing Binaries in the 21st Century—Opportunities for Amateur Astronomers" by E. F. Guinan, S. G. Engle, E. J. Devinney

(ej204): "How Amateurs Can Contribute to the Field of Transiting Exoplanets" by B. Croll

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