Ashlock, Robert B.,  1930- <br/><br/>
Error patterns in computation / 
Robert B. Ashlock. 
 - 7th ed. 
 - Upper Saddle River, N.J. :  Merrill,  c1998. 
 - ix, 323 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references (p. 266-285). 
<br/><br/><label>ISBN: </label>0135731976 (pbk.) 
<br/><br/><label>LCCN: </label>97001558  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA135.5  / .A782 1998 
<br/><br/><label>Dewey Class. No.: </label>372.7/2044