ISBN: 978-1-881956-78-5 (print) ISBN: 978-1-943378-18-0 (electronic) Copyright © 2013 by International Society of Arboriculture All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means or stored in a database or retrieval system without the prior written permis-sion of the International Society of Arboriculture (ISA). Editorial Coordinator: Wes Kocher Production Coordinator: Amy Theobald Cover Composition and Layout: Kathy Ashmore Illustrations by Bryan Kotwica Printed by: Martin Graphics, Champaign, Illinois, USA International Society of Arboriculture P.O. Box 3129 Champaign, Illinois 61826-3129, USA +1 (217) 355-9411 www.isa-arbor.com permissions@isa-arbor.com 10 9 8 7 6 5 4 3 2 1 0713-KA-750 iihttp://www.isa-arbor.com