. Refining oil. The agitator, or treating tank. Alternate Title: Views of the Penna. oil region. Coverage: [1860?-1910?]. Digital item published 8-11-2006; updated 6-25-2010. 252 Refining oil. The agitator, or treating tank, by Robbins, Frank, 1846-

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Keywords: ., 1860?-1910?, 8-11-2006, coverage, digital, item, published