Here's how you might find relevant information using DDC:
* 613.7 - Physical Culture: This broad category covers physical fitness, exercise, and health. You'll likely find books on Pilates within this category, alongside other exercise methods.
* 615.82 - Physical Therapy: Pilates can be used in rehabilitation, so you may find relevant information under this category.
* 796.4 - Gymnastics: Pilates shares similarities with gymnastics, so you might find books on Pilates listed under this category.
Ultimately, searching for "Pilates" within the DDC online database or library catalog would be the most effective way to locate relevant resources.