Report on the production, technology, and uses of petroleum and its products . Horizontal section; A, Mixing apparatus : B, Filtering apparatus.[Fig. 44—page 174.] Ramdohrs paraffine filtering Vertical section ; A, Mixing apparatus ; B, Filtering apparatus. [Fig. 45—page 174.] Ramdohrs paraffine filtering apparatus.

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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherwashi, bookyear1885