Loughlin, G. F.  1880-1946. <br/><br/>
The gabbros and associated rocks at Preston, Connecticut / 
by G.F. Loughlin. 
 - Washington,  Govt. Print.Off.,  1912. 
 - 158 p. :  ill., plates, 4 fold maps (in pocket) fold diagr.  24 cm. 
 - U.S. Geological survey. Bulletin 492 .
 - United States.  Geological Survey.  Bulletin ;  492. .
<br/><br/> Includes index. 
<br/><br/><label>LCCN: </label>gs 12000325  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petrology--Connecticut--Preston.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 492