00366nam a2200133Ia 4500 210210b1976 xxu||||| |||| 00| 0 eng d 001.424 PHIO PHILLIPS (Don T) and others Operations research: principles & practice. N Y John Wiley and Sons 1976 585 Operations Research 041621 91396 91396 0 0 ddc 0 0 AL AL SSS 2021-02-17 0.00 0 001.424 PHIO 041621 2021-02-17 00:00:00 2021-02-17 BK