Park, J E. <br/><br/>
Textbook of Prevntive and Social Medicine  Textual Documents 

 - 11th ed. 
 - Jabalpur  M/S Banarsidas Bhanot  1987 
 - 620. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Index Terms: </label>Medicine 
<br/><br/><label>Dewey Class. No.: </label>610  / PAR