- Captain Billy's Inc., 898 Rosewood Boulevard, Midland, MI, 48640, USA, (tel) (517) 835-9924, (fax) (517) 835-2585. E-mail.
- http://www.opusweb.com/captainbillys.
- Diving>>Divers
- Diving>>Diving Instruction
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- Straatsma Association, P O Box 97, Elk Rapids, MI, 49629, USA, (tel) 616-264-6500, (fax) 616-264-6531.
- Manufacturer's representative and agent.
- Diving>>Diving Instruction
- Equipment and Supplies>>Hardware
- Manufacturer's Representatives>>Manufacturer's Reps, Agents & Dealers
- Services>>Consultants
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