TY  - BOOK
AU  - Great Britain. Office of Population Censuses and Surveys
AU  - Great Britain. Employment Department Group
TI  - Standard occupational classification. Vol.1: Structure and definition of major, minor and unit groups
SN  - 0116912847
U1  - OFF 
PY  - 1990///
CY  - London
PB  - HMSO
KW  - Occupations - Classification
ER  -