Sivakumkar, Saravanamittu Subramaniam Conjunctive use of surface and groundwater to improve food productitiyu ina rest / by Saravanamittu Subramaniam Sivakumkar - Moratuwa Dept. of Civil Engineering 2008 - xiii, 107 p. Subjects--Topical Terms: Hydraulic engineeringWater ResourcesIrrigation-efficiency Dewey Class. No.: 627 / SIV