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https://elibrary.tucl.edu.np/handle/123456789/11228
https://elibrary.tucl.edu.np/handle/123456789/11231
https://elibrary.tucl.edu.np/handle/123456789/11230
https://elibrary.tucl.edu.np/handle/123456789/11235
https://elibrary.tucl.edu.np/handle/123456789/11237
https://elibrary.tucl.edu.np/handle/123456789/11249
https://elibrary.tucl.edu.np/handle/123456789/11251
https://elibrary.tucl.edu.np/handle/123456789/11256
https://elibrary.tucl.edu.np/handle/123456789/11253
https://elibrary.tucl.edu.np/handle/123456789/11254
https://elibrary.tucl.edu.np/handle/123456789/11252