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Acknowledgements
The authors and publishers acknowledge the following sources of copyright material and are
grateful for the permissions granted. While every effort has been made, it has not always
been possible to identify the sources of all the material used, or to trace all copyright holders.
If any omissions are brought to our notice, we will be happy to include the appropriate
acknowledgements on reprinting.
Thanks to the following for permission to reproduce images:
Cover image: ori-artiste/Getty Images
Inside: Unit 1 Westend61/GI; Unit 2 Stock_colors/GI; Unit 3 Mandy Disher Photography/GI;
Robert Brook/Science Photo Library; Unit 7 Suriyapong Thongsawang/GI; Unit 8 MirageC/
GI; Unit 9 Sean Gladwell/GI; Unit 11 Boris SV/GI; Natasha Breen/RESA&CO/Universal
Images Group via GI; Photos by R A Kearton/GI; Unit 12 PNC/GI; Unit 13 Marcus Franzen/
GI; Unit 15 Tobias Titz/GI; Penny Tweedie/GI
Key: GI= Getty Images
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