USS Preston (DD-19)- 3 Way Indicator Cock with 3-4" Expansion Joint - NARA - 117877440.jpg
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USS Preston (DD 19) 3 Way Indicator Cock with 3 4" Expansion Joint NARA 117877440, USS Preston (DD-19), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Preston (DD-19): 3 Way Indicator Cock with 3/4" Expansion Joint
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coauthor joint resolution leading indicator predictor