- Radio & Television Repair Shops , Glen Head - TV Repair
- Radio & Tv Communications Equipment Manufacturers, Glen Head
- Real Estate, Glen Head - Agent, Broker & Companies
- Real Estate Agent - Property Lessors, Glen Head
- Real Estate Services, Glen Head
- Recreational Organizations, Glen Head
- Reformed Churches, Glen Head
- Refuse Collection & Disposal, Glen Head
- Refuse Systems & Garbage Disposal, Glen Head
- Regulation Miscellaneous Commercial Sectors, Glen Head
- Religious Organizations, Glen Head
- Religious Practitioners, Glen Head
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- Repair Services, Glen Head
- Research & Development Bureaus, Glen Head - Commercial, Economic, Sociological & Educational Research
- Research Services, Glen Head
- Resident Camps, Glen Head
- Residential, Glen Head
- Residential Apartments, Glen Head
- Residential Construction Contractors, Glen Head - General Contractors
- Restaurants/Food & Dining, Glen Head
- Retail Book Stores, Glen Head
- Riding & Rodeo Services, Glen Head
- Roofing Consultants, Glen Head - Roofing Companies
- Roofing Contractors, Glen Head - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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