V R Vijayan <br/><br/>
A pplication of borehole geophysics to groundwater investigation in Gemas Negeri Sembilan and Seri Gading Johore (RAK F3) 

 - GF 2-/1984 
 - Ipoh Perak  Jabatan Penyiasatan Kajibumi Malaysia  1984 
 - ill:45p. 29.8 cm