A HYDROGEOLOGY RESEARCH BY USING SCHLUMBERGER GEO-ELECTRIC METHOD IN DISTRICT HAMPARAN PERAK, DELI SERDANG, NORTH SUMATERA. MEA [Internet]. 2016 Mar. 30 [cited 2026 Oct. 17];1(1):156-61. Available from: https://jurnal.abulyatama.ac.id/index.php/mea2016/article/view/579