McComb, H. E.  <br/><br/>
Magnetic observatory manual 
H. E. McComb 
 - Washington, D. C.  U. S. Depsrtment of Commerce  1952 
 - viii+232p.  index 
 - U.S. Coast and Geodetic Survey Special Publication  .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnetic Observatory
<br/><br/><label>Universal Decimal Class. No.: </label>550.380.1/.2  / MCC