Sheehan, John C. <br/><br/>
The enchanted ring :  the untold story of penicillin / 
John C. Sheehan. 
 - Cambridge :  MIT Press,  1982. 
 - xvi, 224 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliography and index. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0262192047 
<br/><br/><label>LCCN: </label>822093  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Penicillin--History.