Clark, William D. <br/><br/>
Easy mathematics step-by-step :  master high - frequency concepts and skills for mathematical proficiency - fast! / 
William D. Clark and Sandra Luna McCune 
 - New York:  McGraw-Hill Companies, Inc.,  c2012. 
 - vii, 279 pages :  illustrations ;  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780071767651 
<br/><br/><label>Subjects--Personal Names: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary).
<br/><br/><label>Dewey Class. No.: </label>CIR 510 C592 2012