Forty eight state school systems 

 - NA  NA         1949 
<br/><br/><label>Standard No.: </label>120,253 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HISTORY
<br/><br/><label>Dewey Class. No.: </label>V73-1:3T:N4, H9