- Labor & Employment Consultants, Petersburg
- Labor And Employment Relations Attorneys & Lawyers, Petersburg
- Labor And Employment Relations Lawyers & Attorneys, Petersburg
- Laboratories Medical, Petersburg
- Land Surveyor, Petersburg - Land Surveying Services
- Landscape Contractors & Designers, Petersburg
- Landscaping, Petersburg
- Landscaping Materials & Supplies, Petersburg
- Late Night Restaurants, Petersburg
- Laundry Self Service, Petersburg
- Laundry Sewing & Repair, Petersburg
- Lawn & Garden Chemicals, Insecticides & Fertilizers, Petersburg
- Lawyers & Attorneys, Petersburg
- Legal Professionals, Petersburg
- Libraries, Petersburg
- Licensed Counselors, Petersburg
- Life Insurance, Petersburg
- Lighting Fixtures Repair, Maintenance & Installation, Petersburg
- Linen Supply Services, Petersburg
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- Liquid Transportation - Non Hazardous, Petersburg
- Liquor Stores, Petersburg
- Lithographic Printing, Petersburg
- Livestock, Petersburg
- Living Word Church, Petersburg
- Loans Check Cashing, Petersburg
- Loans Personal, Petersburg
- Loans Title Services, Petersburg
- Locks, Petersburg
- Locksmiths, Petersburg - Residence, Commercial, Safe & Auto Car Locksmith
- Locksmiths Equipment & Supplies, Petersburg
- Lodging, Petersburg
- Lodging Services, Petersburg
- Long Haul Trucking Companies, Petersburg
- Lottery Game Retailers, Petersburg
- Lubricating Oils , Petersburg - Motor Oil
- Lumber Companies, Petersburg - Wholesale, Manufacturers & Suppliers
- Lutheran Church, Petersburg
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