GILBERT, Idiegbe Onoriode; 						LAWRENCE, Atumah Oyibo.
Geophysical Investigation of Groundwater Level Using Vertical Electrical Sounding  (A Case Study of Ewu in Edo State Nigeria).
<strong>International Journal of Research in Science</strong>, [S.l.], v. 3, n. 2, p. 22-27, june 2017.
ISSN 2412-4389.
Available at: &lt;<a href="https://www.researchplusjournal.com/index.php/IJRS/article/view/271" target="_new">https://www.researchplusjournal.com/index.php/IJRS/article/view/271</a>&gt;. Date accessed: 07 aug. 2026.
doi: <a href="http://dx.doi.org/10.24178/ijrs.2017.3.2.22">http://dx.doi.org/10.24178/ijrs.2017.3.2.22</a>.