VICE PRESIDENT & EXECUTIVE PUBLISHER George Hoffman
EXECUTIVE EDITOR Lisé Johnson
PROJECT EDITOR Brian Baker
ASSOCIATE DIRECTOR OF MARKETING Amy Scholz
MARKETING MANAGER Kelly Simmons
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DESIGN DIRECTOR Harry Nolan
SENIOR DESIGNER Maureen Eide
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ASSOCIATE PRODUCTION MANAGER Joel Balbin
PRODUCTION EDITOR Yee Lyn Song
COVER PHOTO CREDIT Lew Robertson/Brand X Pictures/Getty Images, Inc.

The chapter opening images are courtesy of Art Padilla. All pictures of the saguaros were taken in Sabino Canyon, in the foothills of the Catalina Mountains in Tucson, Arizona. To see a video about the Sonoran Desert, go to: http://www.youtube.com/watch?v=utFhmlfbBU0.

This book was set in Times Roman by MPS Limited and printed and bound by RR Donnelley. The cover was printed by RR Donnelley.

This book is printed on acid-free paper.image

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