- Labor Organizations, Andover
- Laboratories Dental, Andover
- Laboratories Medical, Andover
- Landscape Contractors & Designers, Andover
- Landscaping, Andover
- Landscaping Materials & Supplies, Andover
- Lawn & Garden Consultants, Andover
- Lawn & Garden Equipment & Supplies, Andover
- Lawn & Garden Services, Andover
- Lawn & Garden Sprinkler Systems, Andover
- Lawn & Garden Supplies & Equipment, Andover
- Lawn Hydroseeding, Andover
- Lawn Maintenance Services, Andover
- Lawn Mowers & Power Equipment, Andover
- Lawyers & Attorneys, Andover
- Leather Goods, Andover
- Leather Goods Cleaners & Dyers, Andover
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- Leather Goods Stores & Dealers, Andover
- Leather Tanning & Finishing Manufacturers, Andover
- Legal Professionals, Andover
- Libraries, Andover
- License Services, Andover
- Life Insurance, Andover
- Limousine Service, Andover
- Liquor Stores, Andover
- Livestock, Andover
- Local & Short Haul Trucking Companies, Andover
- Lodging, Andover
- Long Haul Trucking Companies, Andover
- Lubricating Oils , Andover - Motor Oil
- Lumber & Lumber Products, Andover
- Lumber & Lumber Products, Andover
- Lutheran Church, Andover
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