Bildnachweis S. 28.1: Lesyy / iStockphoto.com; S. 28.2: ayzek / iStockphoto.com; S. 32.1: Hans-Jörg Nisch / Fotolia; S. 35.1: lev dolgachov / Syda Productions – stock.adobe.com; S. 36.1: KariHoglund / Thinkstock; S. 37.1: Smileus / Fotolia; S. 39.1: morane / Fotolia; S. 40.1: tyler olson / Thinkstock; S. 41.2: klickerminth / Fotolia; S. 42.1: EdnaM / iStockphoto.com; S. 43.1: Nemo1963 / Thinkstock; S. 228.1: Baiaz / Getty Images – iStockphoto; S. 228.2: McKevin / Getty Images; S. 228.3: nazarovsergey / Getty Images – iStockphoto; S. 239.1: Dincer AGIN / Getty Images – iStockphoto; S. 232.1: mariaphoto3 / Getty Images; S. 232.2: Chet_W / Getty Images – iStockphoto; S. 234.1: Firn / Getty Images – iStockphoto; S. 235.1: FrancescoCorticchia / Getty Images – iStockphoto; S. 236.1: Akhreneia / Getty Images – iStockphoto; S. 239.1: Silanti / Getty Images – iStockphoto; S. 241.1: Firn / Getty Images – iStockphoto Illustrationen Angelika Citak, Wipperfürth: Seiten 29.1; 30.1; 37.1; 229; Da-TeX, Leipzig: Seiten 28.1; 32.1; 38.1; 42.1; 230.1; 231.1; 234.1; 239.1; 245 Bildnachweis / Illustrationen Nur zu Prüfzwecken – Eigentum des Verlags öbv
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