00532nam a2200181 a 450000500170000002000150001708200160003210000200004824500600006825000120012826000350014030000260017569000330020196400160023499700130025099900170026395200700028020251203110611.0  a8178080362  a005.43bBEC  aBeck, Leland L.  aSystem SoftwarebAn Introduction to Systems Programming  a3rd ed.  aDelhibPearson Educationc1997  axiii,519p.c24 cm. PB  aSystem study-System software  bcdefg_  a114937 C  c95885d95885  00104070aPUbPUd2005-09-15g236.00l0o005.43 BECp114937yBK