Dr. Harendra Kumar
Associate Professor, Department of Teacher’s Training, D. J. College, Baraut (U.P.) India.
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, Pradeep Kumar
Lecturer, Physics, Vedic Inter College Kurmali. Add-465, Gali no.4, Railpar, Shamli (U.P.) India.
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18.01.069/20190701
10.25215/0701.069