- Radiator Coolant & Solvents, Little Falls - Engine Coolant
- Radiator Repair, Little Falls - Gas Tank Repair
- Radio & Television Repair Shops , Little Falls - TV Repair
- Radio Stations & Broadcasting Companies, Little Falls
- Ready Mix Concrete, Little Falls - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Little Falls
- Real Estate, Little Falls - Agent, Broker & Companies
- Real Estate Management, Little Falls
- Real Estate Properties, Little Falls
- Real Estate Recreational & Resort, Little Falls
- Real Estate Services, Little Falls
- Recycling Drop-Off Centers, Little Falls
- Refrigerated Storage & Warehouse, Little Falls - Warehousing
- Rehabilitation Centers, Products & Services, Little Falls
- Rehabilitation Specialists, Little Falls
- Religious Education, Little Falls
- Religious Organizations, Little Falls
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- Rental Property Management, Little Falls
- Repair Services, Little Falls
- Research Services, Little Falls
- Residential, Little Falls
- Residential Apartments, Little Falls
- Residential Care Facilities, Little Falls
- Residential Construction Contractors, Little Falls - General Contractors
- Residential Landfills, Little Falls
- Resorts & Hotels, Little Falls
- Restaurants/Food & Dining, Little Falls
- Retail Book Stores, Little Falls
- Retreat Facilities & Houses, Little Falls
- Rock Shops, Little Falls
- Roofing Consultants, Little Falls - Roofing Companies
- Roofing Contractors, Little Falls - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rooming & Boarding Houses, Little Falls
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