Ong, Chu Yin <br/><br/>
Engineering geology of Ipoh-Changkat Jering Expressway Perak Darul Ridzuan / 
Ong Chu Yin 
 - Faculty of Physical and Applied Sciences, UKM, Bangi :  Geology Department,  1989 
 - 133 p. ;  29 cm. 
<br/><br/>Thesis (M.Sc.) - Universiti Kebangsaan Malaysia, 1989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering geology--Perak--Ipoh<br/>Express highways--Perak--Ipoh