Raja Gopalan <br/><br/>
Guide to simple sanitary measures for the control of enteric diseases 

 - 1st 
 - New Delhi  UBS Publishers and Distributors Pvt.Ltd.  1990 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>621  / RA-G