- Laboratories Dental, Andover
- Laboratories Medical, Andover
- Lamp Shades, Andover
- Lamps & Lamp Shades Retail, Andover - Desk, Table & Floor Lamps
- Land Surveyor, Andover - Land Surveying Services
- Landscape Contractors & Designers, Andover
- Landscape Design & Installation, Andover
- Landscape Lighting, Andover
- Landscaping, Andover
- Landscaping Materials & Supplies, Andover
- Laundry & Dry Cleaning Equipment & Supplies, Andover - Cleaners & Dryers Sales, Repair, Service & Leasing
- Lawn & Garden Equipment & Supplies, Andover
- Lawn & Garden Services, Andover
- Lawn & Garden Sprinkler Systems, Andover
- Lawn & Garden Supplies & Equipment, Andover
- Lawn Maintenance Services, Andover
- Lawn Mowers & Power Equipment, Andover
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- Lawyers & Attorneys, Andover
- Leather Goods Cleaners & Dyers, Andover
- Legal Clinics, Andover
- Legal Professionals, Andover
- Lighting Consultants & Designers, Andover
- Lighting Fixtures & Equipment, Andover
- Lime & Limestone, Andover
- Limousine Service, Andover
- Liquor Stores, Andover
- Livestock, Andover
- Livestock Trailers, Andover
- Local & Short Haul Trucking Companies, Andover
- Locksmiths, Andover - Residence, Commercial, Safe & Auto Car Locksmith
- Lodging, Andover
- Long Haul Trucking Companies, Andover
- Lottery Game Retailers, Andover
- Lumber & Lumber Products, Andover
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