Otto-Hoffmann Koksofen, mit Gewinnung der Nebenproducte
Subtitle: Otto-Hoffman coke-oven, with utilization of by-products
By: Dr. C. Otto & Comp
Contributors: World's Columbian Exposition (1893 : Chicago, Ill.)
Publisher: Dr. C. Otto & Co.
Published: 1893
Place of publication: Dalhausen a.d. Ruhr [Germany]
Language: eng; ger
Number of pages: 17
Other titles: Otto-Hoffman coke-oven, with utilization of by-products
Notes: Cover title.

At head of title: Weltausstelung in Chicago 1893.

Text in German and English.