Universal decimal classification. UDC 656/656.7 :   transport services trafic organization and control 

 - 4th ed. 
 - London :   British Standards Institution,   1968. 
 - 23 páginas 
 - FID. Publicaçao ; no. 179 .
<br/><br/><label>Subjects--Index Terms: </label>Cdu Clasificacion Decimal Universal