This study is a gas quasi experimental field trial. which was carried on families of junior high school students in district 9 in Tehran during 1994-95. The objective of this study was to demonstrate the effect of education of students on knowledge. practice attitude of their families regarding iodized salt. https://www.bekindtopets.com/flash-offer-Omnipure-Inline-K2533-JJ-GAC-Postfilter-10-x-2-Filter-1-4-Quick-Connect-save-extra/