Alexander, L. G. <br/><br/>
Operation mastermind 
L.G. Alexander ; illustrations by D.G. Grant. 
 - London  Longman  c1971. 
 - [5], 62 p.  ill.  20 cm. 
 - Longman structural readers ; Fiction ; Stage 3 .
<br/><br/><label>ISBN: </label>058253741X 
<br/><br/><label>LCCN: </label>gb 71016472  
<br/><br/><label>Nat. Bib. No.: </label>GB71-16472 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Readers
<br/><br/><label>Subjects--Index Terms: </label>English language  Reading books For non-English speaking students 
<br/><br/><label>LC Class. No.: </label>PE1128 
<br/><br/><label>Dewey Class. No.: </label>428/.6/4