00561nam a2200193Ia 4500 CTU_5145 210402s9999 xx 000 0 und d 001.424 S252 Maurice Sacieni Operations research Methods and problems Maurice Sacieni New York John Wiley and Sons 1959 programming languages ( electronic computers ) Nguyễn Quang Điền, 960709 Trung tâm Học liệu Trường Đại học Cần Thơ