Griffey, Harriet,  <br/><br/>
The art of concentration 

 - vii, 246 pages ;   22 cm 
<br/><br/><label>ISBN: </label>9781905744435 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Attention
<br/><br/><label>Dewey Class. No.: </label>153.1532