Hilgard, J. E.  1825-1891. <br/><br/>
Determination of the length of a nautical mile, 
by Professor J. E. Hilgard. 
 - [Washington, D.C.]  Bureau of Navigation, Navy Dept.,  1882. 
 - 3 p.  incl. tab.  23 cm. 
 - U.S. Bureau of Navigation (Navy Dept.)  Naval professional papers,  no. 9 .
<br/><br/> Cover title.  At head of title: Navy scientific papers, no. 9.  "Transcript from U.S. Coast Survey report for 1881." - p. 1. 
<br/><br/><label>LCCN: </label>cd 34000139  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mile, Nautical.
<br/><br/><label>LC Class. No.: </label>V15  / .U5 no. 9