GUPTA R K. (1981). OPERATIONS RESEARCH. KRISHNA PRAKASHAN.
Chicago-čujuhus (17. p.)GUPTA R K. OPERATIONS RESEARCH. MEERAT: KRISHNA PRAKASHAN, 1981.
MLA-čujuhus (9. p.)GUPTA R K. OPERATIONS RESEARCH. KRISHNA PRAKASHAN, 1981.
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