"MATHEMATICS / Applied" . . . . . . . . . . . . . "Electronic books"@en . "Electronic books" . "Queueing models in industry and business"@en . "Queueing models in industry and business" . . . . . . . . "Queuing models in industry and business" . "Queuing models in industry and business"@en . . . . . . . "MATHEMATICS / Probability & Statistics / General" . . "Queuing theory." . . "Business mathematics." . .