城乡居民对比视角下的安全食品购买行为分析——基于全国21个省市的问卷调查
성향거민대비시각하적안전식품구매행위분석——기우전국21개성시적문권조사
An Analysis of Safe Food Purchasing Behavior between Urban and Rural Residents: A Questionnaire in 21 Provinces,China