Richardson, E. S. <br/><br/>
Present aggregate gradation control practices and alternative test methods / 
E. S. Richardson, R. E. Rosenbaum and R. J. Barger 
 - Washington, D.C. :  The Commission ,  1980 
 - iv, 35 p. ;  27 cm. 
<br/><br/> Report no. FWHA-RD-79-100 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation<br/>Highways--transportation services
<br/><br/><label>Dewey Class. No.: </label>388.1