Lobosco, Michael L. <br/><br/>
Mental math workout / 
by Michael L. Lobosco. 
 - New York, NY :  Sterling Publishing Co,  1998. 
 - p.  cm. 
<br/><br/> "A Sterling/Tamos book." 
<br/><br/><label>ISBN: </label>1-895569-27-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Creative activities and seat work<br/>Mathematics--Study and teaching