Transactions of the XV general assembly, Moscow, USSR, 1971 
edited by Leroy R. Alldredge 
 - Paris  International Union of Geodesy and Geophysics   1971 
 - vi+144p.  figs; refs 
 - International Association of Geomagnetism and Aeronomy Bulletin; No. 31 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Iaga Bulletin No.31Iaga BulletinIugg
<br/><br/><label>Universal Decimal Class. No.: </label>550.38  / IAGA