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https://elibrary.tucl.edu.np/handle/123456789/22186
https://elibrary.tucl.edu.np/handle/123456789/22197
https://elibrary.tucl.edu.np/handle/123456789/22205
https://elibrary.tucl.edu.np/handle/123456789/22216
https://elibrary.tucl.edu.np/handle/123456789/22219
https://elibrary.tucl.edu.np/handle/123456789/22235
https://elibrary.tucl.edu.np/handle/123456789/22241
https://elibrary.tucl.edu.np/handle/123456789/22264
https://elibrary.tucl.edu.np/handle/123456789/22268
https://elibrary.tucl.edu.np/handle/123456789/22269
https://elibrary.tucl.edu.np/handle/123456789/22288