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https://elibrary.tucl.edu.np/handle/123456789/21783
https://elibrary.tucl.edu.np/handle/123456789/21757
https://elibrary.tucl.edu.np/handle/123456789/21762
https://elibrary.tucl.edu.np/handle/123456789/21763
https://elibrary.tucl.edu.np/handle/123456789/21764
https://elibrary.tucl.edu.np/handle/123456789/21786
https://elibrary.tucl.edu.np/handle/123456789/21789
https://elibrary.tucl.edu.np/handle/123456789/21787
https://elibrary.tucl.edu.np/handle/123456789/21788
https://elibrary.tucl.edu.np/handle/123456789/21790
https://elibrary.tucl.edu.np/handle/123456789/21792