| Author Profile : |
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 | Author : | Dr. Ranjan Prasad
| | Current Position : | | Department of Physics, S.N.S.R.K.S College Saharsa, B. N Mandal University, Mahepura, Bihar. | | Education : | | - | | Short Profile : | | Dr. Ranjan Prasad is working as Department of Physics, S.N.S.R.K.S College Saharsa,at B. N Mandal University, Mahepura, Bihar.
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