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Rathnam P. V., . (1988). Rathnams Costing Theory. Allhabad: Kitab Mahal.
Rathnam P V, . 1988. Rathnams Costing Theory. Allhabad: Kitab Mahal.
Rathnam P V, . Rathnams Costing Theory. Allhabad: Kitab Mahal. 1988.