Second Edition Gilda D. Lio-Po Yasuo Inui Edited by Second Edition fax : (63 33) 511 8709 email : training@seafdec.org.ph devcom@seafdec.org.ph website : http://www.seafdec.org.ph ALL RIGHTS RESERVED No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. ISBN 971 8511 45 8 July 2010