Helms, Donald B., <br/><br/>
Exploring child behavior :  Student's workbook / 
By d.b. helms and j.s. Turner 
 - 238 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psicología infantil--Estudio y enseñanza
<br/><br/><label>LC Class. No.: </label>BF721  / H46