Proceedings of the 1975 clean air conference held at the Sportsdrome, Rotorua, New Zealand 17-21 February, 1975 

 - New Zealand:   The Clean Air Society of Australian and New Zealand,   1975 
 - 359p.  
<br/><br/><label>Universal Decimal Class. No.: </label>502.55(203)(082.2)  / L5.1