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https://elibrary.tucl.edu.np/handle/123456789/17727
https://elibrary.tucl.edu.np/handle/123456789/17758
https://elibrary.tucl.edu.np/handle/123456789/17764
https://elibrary.tucl.edu.np/handle/123456789/17773
https://elibrary.tucl.edu.np/handle/123456789/17793
https://elibrary.tucl.edu.np/handle/123456789/17814
https://elibrary.tucl.edu.np/handle/123456789/17822
https://elibrary.tucl.edu.np/handle/123456789/17828
https://elibrary.tucl.edu.np/handle/123456789/17718
https://elibrary.tucl.edu.np/handle/123456789/17720
https://elibrary.tucl.edu.np/handle/123456789/17722