Year 1- Semester I http://ir.lib.ruh.ac.lk/handle/iruor/6627 2026-04-08T17:18:28Z BL12201 Entomology http://ir.lib.ruh.ac.lk/handle/iruor/19891 BL12201 Entomology Agriculture 2025-07-22T00:00:00Z