Proceedings of the 1975 Clean Air Conference, held at the Sportsdrome, Rotorua, New Zealand, 17-21 February, 1975. 

 - Auckland :  The Clean Air Society of Australia and New Zealand,  1975. 
 - 2v. :  ill., maps ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution--Congresses.<br/>Air quality management--Congresses.