International Standard Classification of Occupations /
International Standard Classification of Occupations /
International Lobour Organization
- Geneva : c1990.
- vii,457 p. : 28 cm.
9221064387
Occupations
Classification.
HB2582 / .I54 1990
331.70012
9221064387
Occupations
Classification.
HB2582 / .I54 1990
331.70012