spencer Peter Lincoln <br/><br/>
Building mathematical competence in the elementary school 

 -  1966 
<br/><br/><label>Standard No.: </label>149,568 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>T15:3:B, K6