Cumings, E. R.  1874-1967. <br/><br/>
The geology of the Silurian rocks of northern Indiana, 
by Edgar R. Cumings and Robert R. Shrock ... Div. of geology ...  Conservation commission. 
 - Indianapolis,  W. B. Burford Print. Co.,  1928. 
 - 226 p.  incl, ill., tables. diagrs. (part fold.)  23 cm. 
 - Indiana. Dept. of Conservation. Publication  no. 75 .
 - Indiana.  Department of Conservation.  Publication  no. 75. .
<br/><br/>Bibliography: p. 194-201. 
<br/><br/><label>LCCN: </label>gs 28000444  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Indiana.<br/>Geology, Stratigraphic--Silurian.
<br/><br/><label>LC Class. No.: </label>QE661  / .C8