ISCO-88 (International Standard Classification of Occupations)
International Labour Office
ISCO-88 (International Standard Classification of Occupations) - - BELGIUM ILO, Geneva 1990 - 658
305.9/ILO
ISCO-88 (International Standard Classification of Occupations) - - BELGIUM ILO, Geneva 1990 - 658
305.9/ILO