Primary route network :  proceeding of the conference :  further developments for a primary route network / 
organized by the Institution of Civil Engineers and held in London on 4-5 March, 1986. 
 - London :  Thomas Telford,  1986. 
 - 162 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0727703560 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roads--Maintenance and repair--Congresses.