The gabbros and associated rocks at Preston, Connecticut /
Loughlin, G. F. 1880-1946.
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. .
Includes index.
gs 12000325
Petrology--Connecticut--Preston.
QE75 / .B9 no. 492
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. .
Includes index.
gs 12000325
Petrology--Connecticut--Preston.
QE75 / .B9 no. 492