- Bank Supplies & Equipment, Janesville
- Bankruptcy Attorneys & Lawyers, Janesville
- Bankruptcy Attorneys & Lawyers, Janesville
- Bankruptcy Lawyers & Attorneys, Janesville
- Banks, Janesville
- Barbers, Janesville
- Bars & Grills, Janesville
- Beauty Salons, Janesville
- Bowling Centers, Janesville
- Brake Service & Repair, Janesville - Brake Pads
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- Brick Masonry & Bricklayer Contractors, Janesville - Brick Mason - Install & Repair
- Builders & Contractors, Janesville
- Builders & Contractors - More, Janesville
- Building Materials, Janesville - Wholesale, Manufacturers, Dealers & Suppliers
- Building Materials & Supplies, Janesville
- Bus Lines, Janesville - Bus Transportation
- Business & Professional Associations, Janesville
- Business Legal Services, Janesville
- Business Services, Janesville
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