Audio visual materials http://www.digital.lib.esn.ac.lk//handle/1234/15503 2026-04-21T12:46:42Z 2026-04-21T12:46:42Z Bow and arrow http://www.digital.lib.esn.ac.lk//handle/1234/16979 2025-09-06T22:46:56Z 1980-01-01T00:00:00Z Bow and arrow Used to hunt animals by the hunters community. 1980-01-01T00:00:00Z Video cassette http://www.digital.lib.esn.ac.lk//handle/1234/16978 2025-09-06T22:46:53Z 1990-01-01T00:00:00Z Video cassette Used to play and see video recordings. 1990-01-01T00:00:00Z Audio cassette http://www.digital.lib.esn.ac.lk//handle/1234/16977 2025-09-06T22:46:51Z 1990-01-01T00:00:00Z Audio cassette Used to play and hear audio recordings. 1990-01-01T00:00:00Z