共 8 条
[1]
CLARK C, 1951, CONDITIONS EC PROGR, P199
[2]
*FAO, 1953, STAT FOOD AGR 1953 1, P15
[3]
*FAO, 1952, FAO YB FOOD AGR STAT, V1
[4]
*FAO, 1951, FAO MONTHL B, V4, P4
[5]
HEADY EO, 1952, EC AGR PRODUCTION RE, P349
[6]
TINTNER G, ECONOMETRICA, V12, P26
[7]
*UN DEP EC AFF, 1950, UN STAT PAP UN DEP E, V1
[8]
*UN DEP EC AFF, 1951, UN STAT PAP UN DEP E, V3