Findley, Sally E. Migration survey methodologies : a review of design issues / Sally E. Findley. - Liège, Belgium : International Union for the Scientific Study of Population (IUSSP) , 1982 - 81p. ; 24 cm. - IUSSP papers ; no. 20 . Bibliography: p. 75-81. Subjects--Topical Terms: Migration, Internal--Statistical methods Gov. Doc. Class. No.: XZ IUSSP P-20