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Techniques of financial analysis
Helfert, Erich A., (1972)
Economics for business decisions
Mantell, Leroy H., (1972)
Capital budgeting. The public and private sector
Boness, Arthur James, (1972)
Aspects administratifs du budget d'investissement (capital budgeting)
Helfert, Erich A., (1962)
Helfert, Erich A., (1987)