The growth of farms
利用81个农场14年的面板数据，比较了总产出、面积、劳动力和机械折旧的相对增长率，发现增长率与农场规模无关，但与管理者能力和家庭规模正相关，与农场外收入负相关。
A cross-sectional time series of farm accounts for 81 farms and 14 years was used to compare relative growth-rates of gross output, size in hectares, labour force and machinery depreciation. Highly significant differences were observed between types of farming groups and between farms within groups. Growth rates were independent of size, but strongly associated with measures of managerial ability and family size, and negatively with off-farm income. It is concluded that the observed size distribution of farms is the outcome of differential growth in the past rather than of a static optimising decision.