Transactions of the Rome meeting september 14-25, 1954 
edited by V. Lavrsen                                             
 - Copenhagen  Horsholm Bogtrykkeri  1957 
 - IAGA Bulletin No.15 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomagnetism<br/>NASA Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>550.38  / LAV