This book has been reproduced directly from computer-generated copy submitted in final form to APS Press by the editor of the volume. No editing or proofreading has been done by the Press. Reference in this publication to a trademark, proprietary product, or company name by personnel of the U.S. Department of Agriculture or anyone else is intended for explicit description only and does not imply approval or recommendation to the exclusion of others that may be suitable. Library of Congress Control Number: 2003111803 International Standard Book Number: 0-89054-313-5 Ăˆ 2004 by The American Phytopathological Society All rights reserved. No portion of this book may be reproduced in any form, including photocopy, microfilm, information storage and retrieval system, computer database, or software, or by any means, including electronic or mechanical, without written permission from the publisher. Copyright is not claimed in any portion of this work written by U.S. government employees as a part of their official duties. Printed in the United States of America on acid-free paper The American Phytopathological Society 3340 Pilot Knob Road St. Paul, Minnesota 55121-2097, U.S.A.
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