Taral bahisraav, gaisiya utsarjan, vahan utsarjan aur shor ke liye manak 

 - Delhi  Central Pollution Control Board  1991 
 - 65p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Polution control industry - Standards<br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>O91 T171