Stone, Cliff Winfield,  1874- <br/><br/>
Arithmetical abilities and some factors determining them ... / 
Cliff Winfield Stone 
 - New York :  Teachers College Press,  1908 
 - 102 p. ;  25 cm. 
<br/><br/> Vita. 
<br/><br/>Thesis (Ph.D.)--Columbia uiniversity. 
<br/><br/><label>ISBN: </label>0404550193 
<br/><br/><label>LCCN: </label>10-016670 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching