Marshall, R. B.  1867-1949. <br/><br/>
Spirit leveling in Ohio,  1898 to 1916, inclusive, 
R.B. Marshall, chief geographer, work done in cooperation with the state of Ohio, C.E. Sherman, inspector. 
 - Washington,  Govt. print. off.,  1917. 
 - 456 p.  pl., fold. map..  23 cm. 
 - U.S. Geological Survey. Bulletin 651 .
<br/><br/> At head of title: Department of Interior. 
<br/><br/><label>LCCN: </label>gs 17000342  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Ohio--Altitudes.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 651