Mark Beers  <br/><br/>
The merck manual 

 - New York :  Mark Reserch Pub ,  1999. 
 - 2833 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cology
<br/><br/><label>Dewey Class. No.: </label>615  / MAR