Schwimmen in der Schule (Lernmaterialien): Volck, Gunther: 9783778090923: Amazon.com: Books
How to Swim Easily and Enjoyably - DIY Swimming Course: Breaststroke and Diving - Step by Step Guide with 15 Professional Tips (Schwimmen lernen): Free, Holiday 4, Schwimmschule, Kreativ: 9783947809400: Amazon.com: Books
Swim Like A Pro: A Holistic Training Guide on How to Swim Faster & Smarter: Ksebati, Fares: 9798704873587: Amazon.com: Books