共 12 条
[1]
[Anonymous], 1980, PLANNING TECHNOLOGIE
[2]
Belshaw D. G. R., 1972, East African Journal of Rural Development, V5, P39
[3]
Biggs S. D., 1981, Bangladesh Journal of Agricultural Economics, V4, P35
[4]
Clay EJ., 1984, ROOM MANOEUVRE EXPLO
[5]
COLLINSON M, 1982, 3 MICH STAT U DEP AG
[6]
GILBERT EH, 1980, 6 MICH STAT U DEP AG
[7]
MOSCARDI E, 1983, CIMMYT0183 EC PROGR
[8]
Shaner W.W., 1982, FARMING SYSTEMS RES
[10]
STAVIS B, 1979, 3 MICH STAT U DEP AG