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Dura-Europos on the Euphrates has given us many surprises, and not the least of them was that from this outpost we should acquire a Feriale, or list of days with prescribed offerings, and that these holy days should be exclusively Roman, Imperial, or military. After preliminary publications by Rostovtzeff, under whose guidance the whole work has proceeded, the text was edited by Robert O. Fink, Allan S. Hoey and Walter F. Snyder with a commentary indispensable to students of Roman religion and Imperial history.
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Arthur Darby Nock (1952) studied this question.
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