共 6 条
[2]
FAROUK A, 1965, MODERNIZING SUBSISTE
[3]
RAHIM SA, 1968, THESIS MICHIGAN STAT
[4]
RAHMAN M, 1968, SURVEY COSTS RETURNS
[5]
RAPER AF, 1970, RURAL DEVELOPMENT AC
[6]
THOMAS JW, 1968, THESIS HARVARD U