1.

図書
図書
1. The physics and technology of tennis
Howard Brody, Rod Cross, Crawford Lindsey
出版情報: Solana Beach, Calif. : Racquet Tech Pub., c2002
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2.

図書
図書
2. Technical tennis : racquets, strings, balls, courts, spin, and bounce
Rod Cross, Crawford Lindsey
出版情報: Vista, Calif. : Racquet Tech Pub., c2005
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