Franseth, Jane. <br/><br/>
Survey of research on grouping asw related to pupil learning / 
Jane Franseth and Rose Kourg. 
 - Washigtón, D. C.  Departament of halth education and Welfare,  1966. 
 - 64 p. 
<br/><br/><label>Encabezamiento--Tema: </label><br/>Aprendizaje