Infromation about industrial emissions to the atmosphere 
by Department of the Enivronment, United Kingdom 
 - London  Her Majesty's Stationery Office  1973 
 - 34p. 
<br/><br/><label>ISBN: </label>0 11750632 x 
<br/><br/><label>Dewey Class. No.: </label>X91x42 Un3