Mullis, Ina V. S. <br/><br/>
What students know and can do :  profiles of three age groups / 
by Ina V. S. Mullis, Susan J. Oldefendt, Donal L. Phillips. 
 - [E.U.A.] :  NAEP,  1977. 
 - x, 116 p., 1 h. sueltas 
<br/><br/><label>Encabezamiento--Tema: </label><br/>EDUCACION ---ESTADOS UNIDOS--ESTADISTICA -