Walton John G. <br/><br/>
Textbook of Dental Pharmacology and Therapeutics/ 
John G. Walton, John W. Thompson and Robin A. Seymour 
 - 2nd ed. 
 - New York,  Oxford university press,  1994 
 - 273p.; 
<br/><br/><label>ISBN: </label>9780192625069