Harrison, Courtney D. <br/><br/>
Concepts in mathematics for grade 4:  the canon / 
Courtney D. Harrison. 
 - Kingston:  Epsilon Publishing Company Ltd.,  2009. 
 - ii, 262 pages:  illustrations;  28 cm. 
<br/><br/><label>ISBN: </label>9789769545502 9769545503 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Problems, exercises, etc.<br/>Mathematics--Examinations, questions, etc.