TY  - BOOK
AU  - UNITED NATIONS ECONOMIC COMMISSION FOR EUROPE
TI  - Guidance on the use of longitudinal data for migration statistics
SN  - 9789211172638
U1  - X:(B28), R0/UN 
PY  - 2020///
CY  - Geneva
PB  - United Nations         
N1  - Bibliography: P 177-88. Appendix: P 172-76
ER  -