Marshall, R. B.  1867-1949. <br/><br/>
Spirit leveling in New Mexico,  1902 to 1915, inclusive, 
R. B. Marshall, chief geographer. 
 - Washington,  Govt. Print. Off.,  1916. 
 - 112 p.  pl.  23 1/2 cm. 
 - United States.  Geological Survey.  Bulletin 638 .
<br/><br/> At head of title:  Department of the Interior. 
<br/><br/><label>LCCN: </label>gs 16000511  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>New Mexico--Altitudes.
<br/><br/><label>LC Class. No.: </label>QE75  / .B9 no. 638