a Abdulkadir ,Yahaya Muhammed <br/><br/>
\a Impact of roadside friction on flow of vehicular traffic in Kaduna state   \h (Text) 
\c by Abdukadir Yahaya Muhammed 
 - \a Zaria :  \b Dept of geography and Environemtal ,management   \c 2019 
 - \a xvi,159p.:  \b Ills. 
<br/><br/>\a Includes biobibliographical reference 
<br/><br/><label>LC Class. No.: </label>\a HE 336.&7 Muh  / \b 509035