Gumz, Wilhelm <br/><br/>
Gas producers and blast furnaces  theory and methods of calculation 
Gumz, Wilhelm 
 - New York  N. P  1950 
<br/><br/><br/>In English 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gas
<br/><br/><label>Dewey Class. No.: </label>OCiiif,2  1950