Magnetic observations in the American Republics 1941-44 

 - Washington, D.C.  Government Printing Office  1946 
 - 94 p.  tbls., map. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOMAGNETISMO<br/>OBSERVACIONES MAGNETICAS
<br/><br/><label>Universal Decimal Class. No.: </label>A/538.79/E92