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Outlines of physics

By Roy, J. N.. Calcutta Book & Allied 1962 . v, 364 p . 22 cm..

By Roy, J. N.. Calcutta New central Book Agency 1969 . xviii, 648p. , Vol. 2

By Roy, J. N.. Calcutta New Central Book Agenecy 1973 . xxvi, 838p.

By Roy, J. N.. Calcutta Modern Book Agency 1964 . xix, [varrious pages] , Volume - 1

By Roy, J. N.. Amsterdam North-Holland Publishing 1968 . xxvii, 820p.