A guide to effective social survey /
Yang, Hsin-Pao
A guide to effective social survey / prepared by Hsin-Pao Yang - [Rome] : FAO, 1955 - 138 p. ; 23 cm.
Social surveys
Rural population
A guide to effective social survey / prepared by Hsin-Pao Yang - [Rome] : FAO, 1955 - 138 p. ; 23 cm.
Social surveys
Rural population
