Harrison, Courtney D. <br/><br/>
Concepts in science for Grade 4 / 
Courtney D. Harrison. 
 - Kingston:  Epsilon Publishing Company Ltd.,  2009. 
 - 69 pages:  illustrations;  27 cm. 
<br/><br/><label>ISBN: </label>9789769545540 9769545546 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Examinations, questions, etc.