SIFO 1989: Det naturliga steget

This study was carried out by the Swedish Institute of Public Opinion Research (SIFO) at the request of an environmental campaign called ´Det naturliga steget´. The survey was...本研究由瑞典民意调查研究所（Swedish Institute of Public Opinion Research, SIFO）受一场名为“Det naturliga steget”的环保运动委托开展。本次调研……