67 books • 7 series
Knife Defense (Five Books in One) (Knife Training Methods and Techniques for Martial Artists)
Knife Training and Advanced Martial Arts Concepts (Knife Training Methods and Techniques for Martial Artists, #10)
Knife and Empty-Hand Defenses Compared (Knife Training Methods and Techniques for Martial Artists, #9)
Knife-On-Knife and Multiple Opponent Knife Defense Strategies (Knife Training Methods and Techniques for Martial Artists, #8)
The Power Trip (the Full Series) (Power Trip: How to Survive and Thrive in the Dojo, #1)
Knife Offense (Five Books in One) (Knife Training Methods and Techniques for Martial Artists, #1)