http://ir.lib.ruh.ac.lk/handle/iruor/21093 Sat, 13 Jun 2026 09:06:01 GMT 2026-06-13T09:06:01Z http://ir.lib.ruh.ac.lk/handle/iruor/21129 OCG 2243: Physical Oceanography Department of Oceanography and Marine Geology Tue, 01 Apr 2025 00:00:00 GMT http://ir.lib.ruh.ac.lk/handle/iruor/21129 2025-04-01T00:00:00Z