Systems and models in air and water pollution. 

 - London :  Chameleon Press,  1976. 
 - various pagings :  ill. ;   28 cm. 
<br/><br/> 'A symposium organised by The Institute of Measurement and Control,... London, 22-24 September, 1976. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution.<br/>Pollution control industry.