- Machine Shop & Tool Repair Service, Dora
- Machinery And Equipment Manufacturers, Dora
- Machinery, Supplies & Equipment - Business Production Related, Dora
- Machinery, Supplies & Equipment - Business Supplies Related, Dora
- Mail Delivery Service, Dora
- Major Appliances, Dora - Household & Kitchen
- Management Consultants & Services, Dora
- Manicurists & Pedicurists, Dora
- Manufacturing, Dora
- Medical & Dental Management, Dora
- Medical Management & Business Administration Service, Dora
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- Methodist Church, Dora
- Mexican Restaurants, Dora
- Ministries Church, Dora
- Miscellaneous Government, Dora
- Miscellaneous Personal Services, Dora
- Miscellaneous Photographers, Dora
- Miscellaneous Professional, Dora
- Mobile Home Parks & Communities , Dora
- Motion Picture Pre & Post Production Services, Dora
- Motor Vehicle, Dora
- Museums, Dora
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