Archived - Standard Industrial Classification - Establishments (SIC-E) 1980
- O - Educational Service Industries
- 85 - Educational Service Industries
- 851 - Elementary and Secondary Education
- 8511 - Elementary and Secondary Education
- 852 - Post-Secondary Non-University Education
- 8521 - Post-Secondary Non-University Education
- 853 - University Education
- 8531 - University Education
- 854 - Library Services
- 8541 - Library Services
- 855 - Museums and Archives
- 8551 - Museums and Archives
- 859 - Other Educational Services
- 8599 - Other Educational Services
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