00309 a2200121 4500 20250522115829.0 658.54 ENR ENRICK, N. L. Managent Operatins Research. New York, Holt, 1965. x, 320p.: ill.; figure. table Index 21cm. ddc BKS 2510 2510 2025-05-22 11:59:59 0 658.54 ENR 0000009466 30000.00 2025-05-22 BKS 0 ddc 0 0 0 CBEML CBEML GEN 1990-04-06 10000.00