O'Brien, Harry <br/><br/>
Maths plus mentals (outcomes edition) : achieving and extending stage 3 
/ Harry O'Brien, Greg Purcell 
 - Australian :  Horwitz Martin Education,  1999 
 - 76 p. : 
<br/><br/><label>ISBN: </label>9780725317720 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / O132