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Figure 4-1c Courtesy of Yes Man/Shutterstock

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Figure 4-1e Courtesy of REDPIXEL.PL/Shutterstock

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Figure 4-5a Courtesy of Viktorus/Shutterstock

Figure 4-5b Courtesy of dencg/Shutterstock

Figure 4-5c Courtesy of Maksym Dykha/Shutterstock

Figure 4-5d Courtesy of Bob Mawby/Shutterstock

Figure 12-18 Courtesy of White78/Shutterstock Courtesy of Shutterstock

Figure 12-19 Courtesy of Sashkin/Shutterstock Courtesy of Shutterstock

Figure 14-2a Courtesy of Norman Chan/Shutterstock

Figure 14-2b Courtesy of Scanrail1/Shutterstock

Figure 14-2c Courtesy of Norman Chan/Shutterstock

Figure 14-2d Courtesy of You can more/Shutterstock

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Figure 13-7 Courtesy of Chesky/Shutterstock

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Figure 19-2 Courtesy of S.john/Shutterstock

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Figure 31-3 Courtesy of Gary James Calder/Shutterstock

Chapter Opener images Courtesy of Getty Images; Charlie Edwards/Photo disc/Getty Images

Cover image Courtesy of Gorodenkoff/ShutterStock