00372nam a2200133 a 450000500170000000800410001702000180005804100080007608200080008410000190009224500520011126400480016330000270021120260717092732.0260717s2006    ii            000 0 eng d  a9780070635463  aeng04a0051 aDas, Sumitabha10aUnix: Concepts and Techniques /cDas, Sumitabha 1aNew Delhi :bTata McGraw Hill,cc2006,2012.  axviii, 671 p. ; 25 cm.