00281nam a2200109 a 450000500170000002000150001710000260003224500290005825000130008726000440010030000270014420251203110913.0  a8120320638  aTannenbaum, Andrew S.  aModern operating systems  a2nd Edn.  aNew DelhibPrentice hall of Indiac2001  axxiv, 951p.c26 cm. PB