TY  - BOOK
AU  - BILSBORROW Richard E and others
TI  - Migration surveys in low income countries:  Guidelines for survey and questionnaire design.   
U1  - Y:5.N8t4, M4/SC 
PY  - 1984///
CY  - London
PB  - Croom Helm         
N1  - Bibliography: P 499-535
ER  -