The economics of freedom：theory, measurement, and policy implications The economics of poverty :: history, measurement, and policy / Scale economy of agriculture in China: trends and policy implications The economics of contracts：theories and applications Synchronized phasor measurements and their applications 中国上市公司专利经济价值：理论、测算与应用：theory, measurement and applications 情境判断测验：理论、测量与应用：theory, measurement, and application 并列题名：Scale economy of agriculture in China: trends and policy implications