Research Article
Changes in Water Table Depth in an Oil Palm Plantation and its Surrounding Regions in Sumatra, Indonesia
M. Edwin S. Lubis,
I. Yani Harahap,
Taufigh C. Hidayat,
Y. Pangaribuan,
Edy S. Sutarta,
Zaharah A. Rahman,
B.S. Christopher Teh and M.M. Hanafi