Research on the economic effect of rural social security expenditure in China 并列题名:Research on the economic effect of rural social security expenditure in China Research on the economic effects of excise taxation in China 并列题名:Research on the economic effects of excise taxation in China Research on the economic effects of China's new rural pension system Research on rural social security legal system in China Research on the legal system of rural social security Research on the economic growth effect of manufacturing firm dynamics in China Research on effectiveness evaluation of equalization transfer expenditure in China Research on rural social security in China