Rockwell, John E. <br/><br/>
A comparison of the manipulation of concrete objects and the use of pictures in children's language production  variations of a Piagetion theme /  [microform] : 
by John Rockwell 
 - Ann Arbor, Mich. :  University Microfilms International,  1980 
 - 2 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Doctor of Education)-Temple University, 1979 
<br/><br/><label>Subjects--Personal Names: </label><br/>Piaget, Jean, 1896 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child development<br/>Children--Language<br/>Communication<br/>Language and education