Sharma, Utkarsh ed. <br/><br/>
World encyclopaedia of cleanliness, hygiene and sanitation education (We chase) 

 - New Delhi  National Institute of Cleaniness education & Research  2016 
 - 3300 p. 
<br/><br/><label>ISBN: </label>9788171397044 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cleanliness-Encyclopaedia
<br/><br/><label>Dewey Class. No.: </label>631(031) S33W