Geology and mineral resource potential of the Chattanooga 1 x 2 quadrangle, Tennessee and North Carolina : A preliminary assessment / 
by Sandra H.B. Clark...[et.al.] 
 - Washington :  U.S. Government Printing Office,  1993 
 - 35 p. :  ill. ;  28 cm. 
 - U.S. Geological Survey bulletin ;  2005 .