- Radioactivity Detection Devices, Tewksbury
- Radon Testing & Services, Tewksbury
- Ready Mix Concrete, Tewksbury - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Tewksbury
- Real Estate, Tewksbury - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, Tewksbury
- Real Estate Appraiser, Tewksbury - Appraisal Services
- Real Estate Appraisers & Consulting Services, Tewksbury
- Real Estate Management, Tewksbury
- Real Estate Services, Tewksbury
- Recreational Equipment & Supplies Companies, Tewksbury
- Recreational Equipment Repair & Service, Tewksbury
- Recreational Services, Tewksbury
- Recycling Scrap & Waste Materials, Tewksbury - Scrap Metal, etc
- Refrigerated Storage & Warehouse, Tewksbury - Warehousing
- Refrigerated Truck, Tewksbury
- Refuse Systems & Garbage Disposal, Tewksbury
- Rehabilitation Centers, Products & Services, Tewksbury
- Rehabilitation Specialists, Tewksbury
- Religious Goods & Church Supplies Stores, Tewksbury
- Religious Organizations, Tewksbury
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- Repair Services, Tewksbury
- Research Services, Tewksbury
- Residential, Tewksbury
- Residential Apartments, Tewksbury
- Residential Care Facilities, Tewksbury
- Residential Construction Contractors, Tewksbury - General Contractors
- Restaurant Equipment, Tewksbury
- Restaurant Equipment & Supplies, Tewksbury
- Restaurant Management & Consulting, Tewksbury - Food Facilities Consultants
- Restaurant Supplies & Equipment, Tewksbury
- Restaurants - Breakfast Brunch Lunch, Tewksbury
- Restaurants/Food & Dining, Tewksbury
- Retirement Communities & Home, Assisted Living & Apartments, Tewksbury
- Rifle & Pistol Ranges, Tewksbury
- Rigging Service & Crane Hoisting, Tewksbury
- Road Construction, Tewksbury - Companies & Contractors
- Road Construction & Repair Contractors, Tewksbury
- Roast Beef Restaurants, Tewksbury
- Roofing Consultants, Tewksbury - Roofing Companies
- Roofing Contractors, Tewksbury - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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