TY  - SER
AU  - Ichiminami, Fumikazu.
TI  - Spatial patterns of productivity of agricultural land in Japan from 1960 to 1975
T2  - Science reports of the institute of geosciencce univerity of Tsukuba 
PY  - 1982///
CY  - Japón-JP : 
PB  - University of Tsukuba, 
ER  -