Ries, Heinrich,  1871-1951. <br/><br/>
The clays of Wisconsin and their uses. 
By Heinrich Ries. With a report on molding sands, by H. Ries and F. L. Gallup. 
 - Madison, Wis.,  Published by the state,  1906. 
 - xii, 259, [3] p.  illus., XXX (i. e. 31) pl. (part fold., incl.  front., maps) fold. tables, diagrs.  23 cm. 
 - Wisconsin. Geological and natural history survey. Bulletin  no. 15. Economic series no. 10 .
 - Wisconsin Geological and Natural History Survey.  Bulletin ;  no. 15. Wisconsin Geological and Natural History Survey.  Economic  series ;  no. 10. .
<br/><br/><label>LCCN: </label>gs 07001030  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clay--Wisconsin.<br/>Sand.
<br/><br/><label>LC Class. No.: </label>QE179  / .A2 no. 15