RATHNAM P V. (1988). RATHNAM`S COSTING ADVISER: PROBLEMS AND SOLUTIONS (7.). KITAB MAHAL.
Chicago-čujuhus (17. p.)RATHNAM P V. RATHNAM`S COSTING ADVISER: PROBLEMS AND SOLUTIONS. 7. ALLAHABAD: KITAB MAHAL, 1988.
MLA-čujuhus (9. p.)RATHNAM P V. RATHNAM`S COSTING ADVISER: PROBLEMS AND SOLUTIONS. 7. KITAB MAHAL, 1988.
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