School certification of full-time attendance for social security purposes. 

 - [Washington]  1967. 
 - 10 p.  24 cm. 
<br/><br/> "TIB-2." 
<br/><br/><label>LCCN: </label>hew68000019 //r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social security--United States.<br/>School attendance--United States.<br/>Social insurance--United States.<br/>School attendance--United States.