TY - BOOK ED - Agrarian Research and Training Institute, Colombo, Sri Lanka TI - An Analysis of the Pre-Mahaweli Situation in H4 and H5 Areas in Kala-Oya Basin T2 - Research Study No. 33 PY - 1979/// CY - Agrarian Research and Training Institute, Colombo, Sri Lanka PB - Colombo KW - Agriculture ER -