Spencer, Nye S. <br/><br/>
Handbook of magnetic compass adjustment and compensation / 
N.S. Spencer 
 - Washington  :  US goverment printing office,  1963 
 - 150 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Compass.
<br/><br/><label>Subjects--Index Terms: </label>Handbook Magnetic Magnetic compass 
<br/><br/><label>Dewey Class. No.: </label>621.384191  / SPE 1963