- Racing Car Supplies, Germantown
- Radiologists, Germantown - Radiology Doctors, Physicians & Surgeons
- Radiology Equipment & Services, Germantown - X-Ray Equipment & Supplies
- Railroad, Germantown - Commuter & Passenger Transport
- Railroad Companies, Germantown
- Range & Oven Repair, Service & Sales, Germantown
- Real Estate, Germantown - Agent, Broker & Companies
- Real Estate Appraiser, Germantown - Appraisal Services
- Real Estate Appraisers & Consulting Services, Germantown
- Real Estate Management, Germantown
- Real Estate Services, Germantown
- Recycling Scrap & Waste Materials, Germantown - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, Germantown
- Refrigerated Truck, Germantown
- Refrigerator Sales, Service & Repair, Germantown - Fridge
- Refuse Collection & Disposal, Germantown
- Refuse Systems & Garbage Disposal, Germantown
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- Religious Organizations, Germantown
- Repair Services, Germantown
- Research & Development Bureaus, Germantown - Commercial, Economic, Sociological & Educational Research
- Research Services, Germantown
- Residential, Germantown
- Residential Apartments, Germantown
- Residential Care Facilities, Germantown
- Residential Construction Contractors, Germantown - General Contractors
- Residential Real Estate Companies, Germantown
- Restaurant Supplies & Equipment, Germantown
- Restaurants/Food & Dining, Germantown
- Retail Book Stores, Germantown
- Retirement Communities & Home, Assisted Living & Apartments, Germantown
- Roof Cleaning & Maintenance, Germantown - Roofing Services
- Roofing Consultants, Germantown - Roofing Companies
- Roofing Contractors, Germantown - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- Rubber Products - Retail, Germantown
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