Title: Diao cha yan jiu fang fa
Description: Ben shu nei rong bao kuo gai shu, Chou yang, Wu hui ying:shi shi yang ben she ji, Zi liao shou ji de fang fa, Liang hao ce liang wen ti de she ji, Ping gu diao cha wen ti he diao cha gong ju, Fang tan diao cha deng.
Subjects: Fang fa, Diao cha yan jiu