- Radio & Television Repair Shops , Canonsburg - TV Repair
- Radio Communications Equipment & Systems , Canonsburg
- Radio Stations & Broadcast Companies, Canonsburg - Radio, Television & Publishers Representatives
- Radio Stations & Broadcasting Companies, Canonsburg
- Radiotelephone Communications, Canonsburg
- Railroad, Canonsburg - Commuter & Passenger Transport
- Railroad & Subway Construction Contractors, Canonsburg
- Railroad Contractors, Canonsburg
- Rails & Accessories, Canonsburg
- Reading Instruction Schools, Canonsburg
- Ready Mix Concrete, Canonsburg - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Canonsburg
- Real Estate, Canonsburg - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Canonsburg
- Real Estate Agent - Property Lessors, Canonsburg
- Real Estate Appraiser, Canonsburg - Appraisal Services
- Real Estate Appraisers & Consulting Services, Canonsburg
- Real Estate Broker, Canonsburg
- Real Estate Consultants, Canonsburg
- Real Estate Developers, Canonsburg
- Real Estate Inspectors, Canonsburg - Real Estate Inspection Service
- Real Estate Management, Canonsburg
- Real Estate Services, Canonsburg
- Recording Instruments Industrial & Scientific, Canonsburg
- Recording Studio - Equipment & Rental, Canonsburg
- Recording Studio Service - Sound & Video, Canonsburg
- Recreational Equipment Repair & Service, Canonsburg
- Recreational Organizations, Canonsburg
- Recreational Services, Canonsburg
- Recycling Drop-Off Centers, Canonsburg
- Recycling Scrap & Waste Materials, Canonsburg - Scrap Metal, etc
- Reducing Exercise & Weight Control Services, Canonsburg
- Refrigerated Beverage Dispenser, Canonsburg - Water Coolers Equipment & Supplies
- Refrigeration & Cooling Equipment, Parts & Supplies , Canonsburg - Water Cooler, Ice Machine, Beverage Dispenser, etc
- Refrigeration Repair & Service, Canonsburg - Ac, Freezer, Refrigerator Repair
- Refrigerator Sales, Service & Repair, Canonsburg - Fridge
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- Refuse Collection & Disposal Services, Canonsburg
- Refuse Systems & Garbage Disposal, Canonsburg
- Rehabilitation Centers, Products & Services, Canonsburg
- Rehabilitation Specialists, Canonsburg
- Rehabilitational Job Training Services, Canonsburg
- Religious Education, Canonsburg
- Religious Organizations, Canonsburg
- Religious Practitioners, Canonsburg
- Relocation Services, Canonsburg
- Rental & Leasing Business Equipment, Canonsburg
- Repair Services, Canonsburg
- Research Services, Canonsburg
- Residential, Canonsburg
- Residential Apartments, Canonsburg
- Residential Care Facilities, Canonsburg
- Residential Construction Contractors, Canonsburg - General Contractors
- Residential Real Estate Companies, Canonsburg
- Restaurant & Lounge, Bar, Or Pub, Canonsburg
- Restaurant Equipment, Canonsburg
- Restaurant Equipment & Supplies, Canonsburg
- Restaurant Supplies & Equipment, Canonsburg
- Restaurants/Food & Dining, Canonsburg
- Retail Book Stores, Canonsburg
- Retaining Wall Contractors, Canonsburg - Build & Repair - Blocks, Concrete, Stones, etc
- Retirement & Estate Planning, Canonsburg
- Retirement Communities & Home, Assisted Living & Apartments, Canonsburg
- Retirement Planning Consultants & Services, Canonsburg
- Rigging Service & Crane Hoisting, Canonsburg
- Right Of Way Acquisition Contractors, Canonsburg
- Road Construction, Canonsburg - Companies & Contractors
- Roadside Assistance, Road Service & Towing Service, Canonsburg
- Rodeo & Equestrian Equipment & Supplies, Canonsburg
- Roof Cleaning & Maintenance, Canonsburg - Roofing Services
- Roofing Consultants, Canonsburg - Roofing Companies
- Roofing Contractors, Canonsburg - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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