Penhallegon, William James,  1875- <br/><br/>
Barite in the Tennessee valley region / 
by W. J. Penhallegon, associate mining engineer, under the general direction of Edwin C. Eckel, chief geologist. 
 - Knoxville, Tenn.,  1938. 
 - 4 p. l., 47 numb. l. :  incl. 5 pl. (incl. map, diagrs.), tables ;  28 cm. 
 - Tennessee valley authority. Water control planning department. Geologic division. Geologic bulletin  no. 9 .
<br/><br/> Photo-printed. 
<br/><br/>Copy 2 with : Iron, chromite and nickel resources of the Tennessee valley region.  Knoxville, Tenn., 1938.  Bound together subsequent to publication. 
<br/><br/>"References": p. 45-47. 
<br/><br/><label>LCCN: </label>gs 38000167  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Barite.<br/>Mines and mineral resources--Tennessee River Valley.
<br/><br/><label>LC Class. No.: </label>TK1425.M8  / T354 no. 35