Sukojo, B. M. ., & Rinjani, I. A. . (2017). ANALISA VARIASI HARMONIK PASANG SURUT DI PERAIRAN SURABAYA AKIBAT FENOMENA EL-NINO . GEOID, 13(1), 77–84. https://doi.org/10.12962/geoid.v13i1.1553