00393nam a22001457a 450000500170000000800410001702000180005804000130007608200180008910000230010724500520013026000340018230000110021665000200022720170127110755.0170127b        xxu||||| |||| 00| 0 eng d  a9780471491101  cPK-LaUMT  a519.82bKLE-Q  aKleinrock, Leonard  aQueueing systems :btheory /cLeonard Kleinrock  aNew York :bJohn wiley,c1975  a417 p.  aQueueing theory