Hellwig, Z. (1963). Linear Regression and its Application to Economics. ELSEVIER.
Chicago-viite (17. p.)Hellwig, Zdzisław. Linear Regression and Its Application to Economics. ELSEVIER, 1963.
MLA-viite (8. p.)Hellwig, Zdzisław. Linear Regression and Its Application to Economics. ELSEVIER, 1963.
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