(introductory text...)

To be used in conjunction with
Pan American Health Organization
Scientific Publication No. 443

PAN AMERICAN HEALTH ORGANIZATION
Pan American Sanitary Bureau, Regional Office of the
WORLD HEALTH ORGANIZATION
525 Twenty-third Street, N.W.
Washington, D.C. 20037, U.S.A.

Disaster
Management Center
UNIVERSITY OF WISCONSIN-EXTENSION
Engineering and Applied Science
432 North Lake Street
Madison, Wisconsin 53706
608-262-2061 Telex No: 265452