O'Brien, Robert C. <br/><br/>
Mrs. Frisby and the rats of Nimh  
Robert C. O'Brien ; illustrated by Zena Bernstein. 
 - 1st Aladdin ed. 
 - New York   Aladdin Books  1986, c1971. 
 - 233 p.   ill.   19 cm. 
<br/><br/> Having no one to help her with her problems, a widowed mouse visits the rats whose former imprisonment in a laboratory made them wise and long lived. 
<br/><br/><label>ISBN: </label>0689710682 (pbk.) :  $4.95 
<br/><br/><label>LCCN: </label>86022324  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mice--Fiction.<br/>Rats--Fiction.