International migration statistics :
International migration statistics : guidelines for improving data collection systems /
Richard E. Bilsborrow ... [et al.]
- Geneva : International Labour Office, 1997.
- 441 p.
A study published with the financial support of the United Nations Population Fund.
eng.
9221095177
Emigration and immigration.
Data collection--methods.
JV 6014 97IN
A study published with the financial support of the United Nations Population Fund.
eng.
9221095177
Emigration and immigration.
Data collection--methods.
JV 6014 97IN