TY - BOOK AU - Amarasena, Sudath Manjula TI - සංකාර්ය පර්යේෂණ SN - 9789559705437 U1 - 658.4034 PY - 2016/// CY - Marandagahamula PB - Sudath Manjula Amarasena KW - Operations research KW - Management decision making KW - Quantitative techniques ER -