Trahan, Mary. <br/><br/>
Focus on psychology  a guide to mastering Peter Gray's Psychology, third edition /  [Book :] 
 Gray study guide. 
Mary Trahan. 
 - 3rd ed. 
 - New York :  Worth Publishers,  c1999. 
 - 297p. 
<br/><br/>Includes bibliographical references. 
<br/><br/> All Ages. 
<br/><br/><label>ISBN: </label>1572597011 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology--Problems, exercises, etc.
<br/><br/><label>LC Class. No.: </label>BF121  / .G667 1999 
<br/><br/><label>Dewey Class. No.: </label>150