Sri Lanka. Dept. of Agriculture2007-11-121988-04-012007-11-121984http://hdl.handle.net/10625/4568Text1 digital file (66 p.)application/pdfenCULTIVATION SYSTEMSCROP YIELDCULTIVATION PRACTICESSRI LANKAON-FARM RESEARCHTECHNICAL REPORTSSTATISTICAL DATATechnical report / Sri Lanka / IDRC Cropping Systems Project, year II, phase IIIIDRC-Related Report