TY  - BOOK
AU  - Hussmanns,Ralf
AU  - Mehran,Farhad
AU  - Verma,Vijay
TI  - Surveys of economically active po[pulation, employment, unemployment and underemployment: an ILO manual on concepts and methods 
SN  - 9221065162
PY  - 1990///
CY  - Geneva
PB  - International Labour Office
ER  -