na INLIS000000000002200 0010-0121000566 Pre - feasibility report on the Batang Selo irrigation project, The Terusan Irrigation Project [s.a] Swiss Technical Cooperation 1979 55 p. ill ; 29 cm 631.67 631.67 IRRIGATION IRIGASI IRRIGATION-WEST SUMATERA SUMATERA BARAT WEST SUMATERA IRIGASI-SUMATERA BARAT. 3261 3261