- Machine Tools , South Glens Falls
- Machinery, Supplies & Equipment - Business Production Related, South Glens Falls
- Machinery, Supplies & Equipment - Business Supplies Related, South Glens Falls
- Manicurists & Pedicurists, South Glens Falls
- Manufacturing, South Glens Falls
- Manufacturing Products, South Glens Falls
- Marriage & Family Counselors, South Glens Falls
- Martial Arts & Self Defense Schools, South Glens Falls
- Masonry Materials & Supplies, South Glens Falls
- Massage Therapists & Professional, South Glens Falls
- Massage Therapy, South Glens Falls
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- Mechanical Contractors, South Glens Falls - Install, Service & Repair
- Membership Sports & Recreation Clubs, South Glens Falls
- Metal Buildings, South Glens Falls - Kits, Homes, Steel Buildings, etc
- Methodist Church, South Glens Falls
- Miscellaneous Business Services, South Glens Falls
- Miscellaneous Government, South Glens Falls
- Miscellaneous Personal Services, South Glens Falls
- Miscellaneous Professional, South Glens Falls
- Monuments, Tombstones, Markers & Memorials, South Glens Falls
- Motor Vehicle, South Glens Falls
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