Aono, Y. <br/><br/>
IGY data of ionospheric drifts at Yamagawa in Japan /  
compiled by the editorial committee, Y. Aono, K. Tsukamoto, M. Ichinose. 
 - Ueno Park, Tokyo, Japan  :    National Committee for the Internation al Geophysical Coordination, Science Council of Japan,    1961. 
 - 34 p.  :    ill.  ;    30 cm.