TY  - BOOK
ED  - International Labour Office
TI  - Statistics of migration: definitions, methods, classifications
T2  - Studies and reports, series N, Statistics,
AV  - HD4813 .I4 Ser. N, no. 18
PY  - 1932///
CY  - Geneva
KW  - Emigration and immigration
KW  - Statistics
N1  - At head of title: International Labour Office
ER  -