Bullworker - Bow Extension/ISO-Gym Starter Kit for Strength Training, Flexibility Extension. Bodyweight, Isometric Strength Training, and Iso-Motion for Total Body Fitness
| Country | USA |
| Brand | HarperCollins Children's Books |
| Manufacturer | Willow |
| Binding | Paperback |
| ItemPartNumber | 50 b/w illus, 40 col plates (16pp), Inde |
| ReleaseDate | 2002-07-19 |
| UnitCount | 1 |
| Format | Illustrated |
| EANs | 9780007118397 |