Author

Stephen W. Walker

Reviewers

Dr. Margaret Stockham Turner

José Urdaneta

Robert D. Watkins

Commissioning Editor

Richard Gall

Copy Editors

Tanvi Bhatt

Paul Hindle

Project Coordinator

Venitha Cutinho

Proofreaders

Simran Bhogal

Ameesha Green

Paul Hindle

Graphics

Sheetal Aute

Production Coordinator

Melwyn D'sa

Cover Work

Simon Cardew