Thesaurus of eric descriptors, with a special chapter on the role and function of the thesaurus in education / 
By frederick Goodman. 
 - 546 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encabezamientos de materia
<br/><br/><label>LC Class. No.: </label>Z695.1E3  / E87