Publisher Susan Winslow

Acquisitions Editor Beth Cole

Development Editor Andrea Gawrylewski

Marketing Director John Britch

Market Development Manager Shannon Howard

Marketing Assistant Tess Sanders

Manager of Digital Development Amanda Dunning

Associate Media Editor Betsye Mullaney

Assistant Editor Jane Taylor

Project Editor Liz Geller

Copyeditor Nancy Brooks

Art Director Diana Blume

Designer Tom Carling

Art Manager Matthew McAdams

Artwork Precision Graphics

Photo Editor Christine Buese

Photo Researchers Jacqui Wong, Donna Ranieri, and Teri Stratford

Production Manager Paul Rohloff

Composition MPS Limited

Printing and Binding RR Donnelley

Library of Congress Control Number: 2013956230

ISBN-13: 978-1-4641-2673-4

ISBN-10: 1-4641-2673-9

© 2014, 2012, W.H. Freeman and Company. All rights reserved

Printed in the United States of America

First printing

W. H. Freeman and Company

41 Madison Avenue

New York, NY 10010

Houndmills, Basingstoke RG21 6XS, England

www.whfreeman.com