A. . Sukariawan, A. . Rauf, A. S. . Sutanto, and B. . Santoso, “THE EFFECT OF WATER TABLE DEEP TO TRUNK CIRCUMFERENCE RUBBER PB260 CLON AND SOIL CHEMISTRY OF PEAT SOIL IN MERANTI ESTATE RAPP OF RIAU”, Petrop, vol. 2, no. 1, pp. 1-5, Apr. 2015.