Shannon, L. J. <br/><br/>
Feasibility of emission standards based on particle size / 
by L. J. Shannon, P. G. Gorman, W. Park 
 - Washington, D. C. :  U. S. Environmental Protection Agency ,  1974 
 - 221 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution--Standards