Ichiminami, Fumikazu. <br/><br/>
Spatial patterns of productivity of agricultural land in Japan from 1960 to 1975. 

 - Japón-JP :   University of Tsukuba,   1982. 
 - páginas 19-37 :   ilustraciones blanco y negro 
 - Irregular 
 - Vol. 3 (Mar. 1982) 
 - Science reports of the institute of geosciencce univerity of Tsukuba    .
 - Science reports of the institute of geosciencce univerity of Tsukuba.   .