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Rob Biernacki
Rob Biernacki is the author of "Core Concepts and Principles of Jiu-Jitsu" and "BJJ 101 the Guard: Retention, Sweeping and Passing".
Books by Rob Biernacki
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Core Concepts and...
Biernacki, Rob
Paperback:
$14.95
BJJ 101 the Guard...
Biernacki, Rob
Paperback:
$16.95