P.O. Box 42792
Philadelphia, PA. 19101
Attention: Ronald F. Smith, P.E.
(215)998-3063
E-Mail to: BlackDallas@hotmail.com
Copyright © 1996 Ronald F. Smith, P.E. All rights reserved. No part of this work may be
reproduced in any form without written permission from the publisher.
Established February 5, 1997.
Last Revision: February 20, 2002